Algebra 2 Check Your Readiness Unit 3

(F-IF.1) Which of these represent a linear function?

Select all that apply.

• (3, 6), (0, 2), (3, 5)

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• For each square whose sides have length s, the perimeter is 4s.

• y = /x/ (y = absolute value of x)

(F-IF.2) Use the information below to answer problem 2.

The table shows the temperature t in degrees Fahrenheit recorded at a weather station h hours after midnight yesterday.

If t is a function of h, what is the value of t(2)?

• 45

• 43

• 40

• 39

(F-IF.2) Which statement is true based on the table? Select the correct symbol.

t(2) ______ t(1).

• <

• >

• =

(F-IF.7a) On the coordinate plane provided, graph the line with the equation 5y – 3x = -15 by plotting the x- and y-intercepts. A correct response must have the points placed at the intercepts.Show your answer on a graph or lined paper. Click turned in on paper before going to the next question.

• Turned in on paper.

• Turned in on Google Doc

(A-SSE.1)One day an e-mail is sent to 7 people. That day each person who receives the e-mail sends the e-mail to two friends. Each friend who receives the e-mail sends it to two more people on the following day. Consider an expression used to determine the number of people who receive the e-mail on day n, if the pattern continues.

Parts of the expression are shown. Interpret the meaning of each part of the expression by writing the letter of the correct expression in the appropriate explanation box below. Not all parts will be used.

• 2 : number of people who receive an email

• 7: Initial number of people who receive the email.

• 2^𝑛: The factor by which the number of people who receive the e-mail increases each day.

• 7(2^𝑛): The number of people who receive the e-mail on day n, where n≥2.

(A-APR.3) What are the zeros of the polynomial 𝑥(𝑥²+4𝑥−12)? Indicate all zeros.

• -12

• -6

• -3

• 0

• 2

A set production designer creates a right circular cylindrical pillar. The designer knows the amount of material used for the surface of the pillar and needs to find the height for a reinforcement rod.

Use 𝐴=(2𝜋𝑟)ℎ+𝜋𝑟², where r represents the radius, h represents the height of the pillar, and A represents the surface area of the pillar. What is a formula for h in terms of the other variables that can be used to find the height?

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(8.SP.3) Eric planted a seedling in his garden and recorded its height each week. The equation shown can be used to estimate the height, h, in inches, of the seedling by the end of each week, w, after it was planted.

What does the slope of the graph of the equation ℎ=(3/4)w + 9/4 represent?

• the height, in inches, of the seedling after w weeks

• the height, in inches, of the seedling when Eric first planted it

• the increase in the height, in inches, of the seedling each week

• the total increase in the height, in inches, of the seedling after w weeks

(8.SP.3) Eric planted a seedling in his garden and recorded its height each week. The equation shown can be used to estimate the height, h, in inches, of the seedling by the end of each week, w, after it was planted.

The equation ℎ=(3/4)𝑤+9/4 estimates the height of the seedling to be 8.25 inches after how many weeks?

• 6

• 7

• 8

• 9

(8.SP.3) Paul wrote the equation 𝑡=2𝑚+40 to represent the temperature, t, in degrees Celsius, after a substance had been heated for m minutes.

Based on Paul’s equation, how many minutes does the substance have to be heated to reach a temperature of 100 degrees Celsius?

• 20

• 25

• 30

• 35