We started Unit 9 today, a unit that is partially review and partially new content around exponential functions. Our first lesson used M&Ms to model exponential growth and decay. If you were in class today, you should finish the lab sheet for the activity. If you were *not* in class today, your homework is HW 9.1 – Investigating Exponential Functions

# Category Archives: Intermediate Algebra

# Intermediate Algebra 2 Assignment for 4/24

After your test today, you got the usual two-sided assignment. Do either side, your choice which, for a homework credit. Do both sides for extra credit on the test.

# Intermediate Algebra 2 Assignment for 4/23

Your test on Unit 8 is tomorrow. By now, you have been given two review assignments. Their answers can be found below. Work on these, plus some additional IXL review to prepare for tomorrow’s test.

## IXL Modules

# AP Statistics Assignment for 4/23

Finish the multiple choice from Topic 7 (p 191), then do Free Response questions 6 and 8.

# Intermediate Algebra 2 Assignment for 4/20

The instructions for today’s activity can be found here.

Your test on Unit 8 will be on **Tuesday, April 24**. Your first review assignment can be found here.

Also, many of you did not complete the IXL assignment from Thursday night. For shame! Please work on that this weekend. If you are having technical issues, please let me know. Don’t use that as an excuse to blow off this assignment!

## IXL Modules

# Intermediate Algebra Assignment for 4/19

The instructions for today’s activity can be found here.

Your test on Unit 8 will be on **Tuesday, April 24th**. We will spend tomorrow (Friday) and Monday reviewing for this test. Tonight for homework, choose **any two** of the IXL modules posted below and get your score up to at least an 80.

Remember: your IXL username is your first initial and your last name, followed by “1@ithaca” and your password is “abc123” (some of you have a slightly different username, please email me or post here if you have trouble logging in).

## IXL Modules

# Intermediate Algebra 2 Assignment for 4/18

Today, we reaffirmed that the Expected Value is a **long-term** average. Meaning the results of a small handful of trials are unlikely to produce the same average as the expected value, however increasing the number of trials will produce averages more in line with what you expect.

## Today’s links

- Homework: HW 8.12 – Understanding Expected Value
- Lesson video: Calculating Expected Value (this is the same video as what was posted yesterday)

## IXL Modules

# Intermediate Algebra Assignment for 4/16

We’ve introduced the last major topic from our unit on Statistics: the Expected Value. This quantity is a long-term per-trial average, that gives you a way of determining what a typical outcome of a handful of trials should be. This is an important tool in the field of statistics, and will be something you’ll see again in later math classes.

## Today’s links

- Homework: HW 8.10 – Expected Value
- Notes: Finding expected value
- Lesson video 1: Constructing a probability model

## IXL Modules

# Intermediate Algebra 2 Assignment for 4/13

We’re starting in on the second part of the unit today, about Probability Models. These are ways of listing/organizing all the outcomes of a random trial and their, often unequal, probabilities. This will be the basis for one of the most useful tools in statistics: the expected value.

## Today’s links

- Homework: HW 8.9 – Probability Models
- Notes: Writing probability models
- Lesson video 1: Constructing a probability model
- Lesson video 2: Verifying a discrete probability model as appropriate

## IXL Modules

# Intermediate Algebra Assignment for 4/12

After today’s quiz, we had another homework/extra credit sheet. Do **one side**, your choice, for a homework credit. Do **both sides** for extra credit on the quiz.

# Intermediate Algebra Assignment for 4/11

Tomorrow, we are having a quiz on the probability/counting content we’ve been doing in this unit so far. Tonight, you should work on the quiz review (answers can be found here).

## IXL Modules

# Intermediate Algebra 2 Assignment for 4/10

Permutations and combinations tend to be tricky to figure out when you first encounter them, so we spent some more time looking at examples, including a modification to the concept to find arrangements of letters in a word.

## Today’s links

- Homework: HW 8.6 – More Permutations and Combinations Practice
- Notes: Permutations, combinations, and letter arrangements
- Lesson video 1: How to tell the difference between permutations and combinations (with examples)
- Lesson video 2: Arrangements of letters in a word

## IXL Modules

# Intermediate Algebra Assignment for 4/6

The next part of the “counting” part of this unit is understanding the difference between two common patterns of counting: permutations and combinations. In brief, permutations are used to count the number of **arrangements** of objects, specifically when order matters like with ranked lists, unique assignments, or sequences. Combinations are used to count the number of **groups** of objects, specifically when order *doesn’t* matter like with committees or batches.

## Today’s links

- Homework: HW 8.5 – Permutations and Combinations
- Notes: More details on the difference between these methods
- Lesson video 1: The difference between these methods (including also factorial)
- Lesson video 2: Calculating permutations and combinations (note that you can just use your calculator, instead of doing this by hand.

## IXL Modules

# Intermediate Algebra Assignment for 4/5

Today was a catch-up day. Nothing new was taught, but we reviewed everything we’ve done up to this point (especially independence!)

## Today’s links

- Homework: HW 8.4 – More Probability and Counting Practice
- Lesson video: Independent and Mutually Exclusive Events

## IXL Modules

# Intermediate Algebra Assignment for 4/3

Today we discussed an important idea in probability and statistics: determining when events are independent and/or mutually exclusive.

## Today’s links

- Homework: HW 8.3 – Mutually Exclusive and Independent Events –
**You may skip questions 6, 7, 8, 9** - Notes: Mutually Exclusive and Independent Events
- Lesson video 1: Setting up a two-way table

## IXL Modules

# Intermediate Algebra Assignment for 4/3

We did some more work with the counting principle today, using it in a variety of applications. The trick is to carefully sort out the number of choices you have to make and the number of options you have for each choice.

## Today’s links

- Homework: HW 8.2 – Applications of the Counting Princple
- Notes: Various applications and strategies
- Lesson Video (showing four quick examples of the difference between allowing/not allowing repetition and how the counting principle is used in either case)

## IXL Modules

# Intermediate Algebra Assignment for 4/2

We started our second-to-last unit today, about tools of probability. Probability is all about chances and odds, determining how likely various events are to occur. We’ve started with some very basic ideas of probability, but we will quickly move to some more complicated and nuanced applications.

## Today’s links

- Homework: HW 8.1 – Probability and the Counting Principle
- Notes: Probability vocabulary and using the counting principle
- Lesson Video 1 (finding simple probabilities)
- Lesson Video 2 (creating a tree diagram and using it to answer a question about probabilitiy)

## IXL Modules

# Intermediate Algebra 2 Assignment for 3/23

You have no homework over the break. However, you do have an opportunity for an extra credit project. You can read the details here: Non-Right Triangle Trig Extra Credit. This project is due the Monday we return from break.

# Intermediate Algebra 2 Assignment for 3/21

Your Unit 7 test is tomorrow, covering all of non-right triangle trigonometry (Law of Sines, including the ambiguous case; Law of Cosines; and the trig formula for area).

**I will give you the formulas for the Law of Sines, Law of Cosines, and Area formula. Please don’t worry about memorizing them!**

Your homework tonight is to finish the Unit 7 Review that you started in class. You can find answers here, so please review these materials in preparation for tomorrow’s test!

## IXL Modules

- Y.17 – Law of Sines –
*assigned as homework 3/8 to a score of 80* **Y.18****– Law of Cosines****Y.19 – Solve a triangle**

# Intermediate Algebra 2 Assignment for 3/20

Your Unit 7 cumulative test, covering all of Law of Sines and Law of Cosines content, will be on **Thursday, March 22**.

Your homework tonight is one final sheet prioritized to practicing the Law of Cosines: HW 7.11 – Law of Cosines Practice 2

## IXL Modules

- Y.17 – Law of Sines –
*assigned as homework 3/8 to a score of 80* **Y.18****– Law of Cosines****Y.19 – Solve a triangle**