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Algebra 2 6-6 Guided Practice: Function Operations

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Last updated over 3 years ago
17 questions
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5
F.BF.1.b
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F.BF.1.b
F.BF.1.c
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Question 1
1.

Question 2
2.

Take Note: Take a moment to record the function operations in your notes.
Question 3
3.

Question 4
4.

Draggable itemarrow_right_altCorresponding Item
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F.BF.1.b
Question 6
6.

10
F.BF.1.b
Question 8
8.

10
Question 9
9.

Take Note: What is a composite function ?

You may use the canvas to help illustrate your written response.

Question 10
10.

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F.BF.1.b
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Question 12
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Question 14
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Question 15
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Question 16
16.

10
Question 17
17.

🧠 Retrieval Practice:
Summarize the mathematical content of this lesson. What topics, ideas, and vocabulary were introduced?

Video Check: Select all that apply with regards to the video embedded directly above this item.
🕵️ I carefully watched the entire video.
📵 I removed distractions from my field of view while watching the entire video.
🎧 I used headphones (or earbuds) to listen to the entire video as I watched it.
✋ I sought clarification, as needed, to understand each concept in the video.
🎓 I understand each concept in the video and feel ready to move on.
🎯 I feel prepared to complete challenging problems related to the video.
❌ None of these statements apply.
Solve It! You want to buy a sofa that was marked down by $50 before the clearance discount was applied.


The furniture store may add the 5% sales tax before applying the additional discount, or it may add the sales tax after applying the additional discount. Which way is better for you, the customer?
After
Before
Video Check: Select all that apply with regards to the video embedded directly above this item.
🕵️ I carefully watched the entire video.
📵 I removed distractions from my field of view while watching the entire video.
🎧 I used headphones (or earbuds) to listen to the entire video as I watched it.
✋ I sought clarification, as needed, to understand each concept in the video.
🎓 I understand each concept in the video and feel ready to move on.
🎯 I feel prepared to complete challenging problems related to the video.
❌ None of these statements apply.
Take Note: Use the properties of function operations to match equivalent expressions.
h(x)-g(x)
\frac{h(x)}{g(x)}
f(x)+g(x)
(h-g)(x)
(\frac{h}{g})(x)
h(x)\cdot g(x)
(h\cdot g)(x)
(f+g)(x)
Question 5
5.

Video Check: Select all that apply with regards to the video embedded directly above this item.
🕵️ I carefully watched the entire video.
📵 I removed distractions from my field of view while watching the entire video.
🎧 I used headphones (or earbuds) to listen to the entire video as I watched it.
✋ I sought clarification, as needed, to understand each concept in the video.
🎓 I understand each concept in the video and feel ready to move on.
🎯 I feel prepared to complete challenging problems related to the video.
❌ None of these statements apply.
Question 7
7.

Video Check: Select all that apply with regards to the video embedded directly above this item.
🕵️ I carefully watched the entire video.
📵 I removed distractions from my field of view while watching the entire video.
🎧 I used headphones (or earbuds) to listen to the entire video as I watched it.
✋ I sought clarification, as needed, to understand each concept in the video.
🎓 I understand each concept in the video and feel ready to move on.
🎯 I feel prepared to complete challenging problems related to the video.
❌ None of these statements apply.
Take Note: Consider functions f(x) and g(x) and the composite function g(f(x)).
Match equivalent items below.
g(f(x))
x
Domain of f(x)
Range of f(x)
Domain of g(f(x))
(g\circ f)(x)
Question 11
11.

Video Check: Select all that apply with regards to the video embedded directly above this item.
🕵️ I carefully watched the entire video.
📵 I removed distractions from my field of view while watching the entire video.
🎧 I used headphones (or earbuds) to listen to the entire video as I watched it.
✋ I sought clarification, as needed, to understand each concept in the video.
🎓 I understand each concept in the video and feel ready to move on.
🎯 I feel prepared to complete challenging problems related to the video.
❌ None of these statements apply.
Question 13
13.

Problem 4 Got It? A store is offering a 15% discount on all items. Also, employees get a 20% discount (20% off original price(s)). Write a composite function to model taking the 15% discount and then the 20% discount.
Let D(x) = cost after applying the 15% discount, E(x) = cost after applying the 20% employee discount, and x = cost of item(s). Then D(x) = 0.80x and E(x) = 0.85x. (E ◦ D)(x) = 0.68x.
Let D(x) = cost after applying the 15% discount, E(x) = cost after applying the 20% employee discount, and x = cost of item(s). Then D(x) = 0.85x and E(x) = 0.80x. (E ◦ D)(x) = 0.68x.
Problem 4 Got It? A store is offering a 15% discount on all items. Also, employees get a 20% discount (20% off original price(s)). Write a composite function to model taking the 20% discount and then the 15% discount.
Let D(x) = cost after applying the 15% discount, E(x) = cost after applying the 20% employee discount, and x = cost of item(s). Then D(x) = 0.85x and E(x) = 0.80x. (D ◦ E)(x) = 0.68x.
Let D(x) = cost after applying the 15% discount, E(x) = cost after applying the 20% employee discount, and x = cost of item(s). Then D(x) = 0.80x and E(x) = 0.85x. (D ◦ E)(x) = 0.68x.
Problem 4 Got It? Reasoning: In the scenario above, which order of discounts results in a lower cost to the employee?
Taking the 20% discount first results in a lower price.
Taking the 15% discount first results in a lower price.
The total discounts are the same, so it does not matter which discount you take first.
Problem 1 Got It?
A
B
C
D
Problem 2 Got It?
A
B
C
Problem 3 Got It?
A
B
C
D
Take Note: Recall that
(g\circ f)(x)=g(f(x)).
Regardless of how this composition of functions is written, which function is evaluated first?
f(x)
g(x)