Unit 1
Unit 2
Unit 3
Unit 5
Unit 7
100

Find f(-10) 

                             f(x)=7x - 5

A: -75                     B: -65

C: 65                      D: 90

A: -75

100

y>2x-1        2x>5

Which choice consists of the y-coordinates of all the points that satisfy the system of inequalities above?

A: y>6           B: y>4          C: y>5/2          D: y>3/2

B: y>4

100

If A is a rational number and B is a rational number, then the product AB must be?

A: rational         B: imaginary

C: and integer  D: irrational

A: rational

100

A new species of fish is released into a lake, and the fish multiply quickly. The growth of their population is modeled by the exponential function P(t)=7b^t, where t is the time in weeks after the release and B is a positive unknown base. According to the model, how many fish of the new species were released initially?

A: 2           B: 7          C: 12           D: 14

B: 7

100

Beverly is starting a new diet. Her current weight is 160 pounds. She expects to lose 4 pounds per month. If x represents the number of months Beverly is on the diet, which linear function models the situation?

A: y=4x-160           B: y=-4x+160

C: y=1/4x+160      D: y=-4x

B: y=-4x+160

200

A store charges their customers based on the number of items that they buy. Jane bought four items and was charged $15 and George bought twelve items and was charges $39. Write a function to model the cost based on the number of items you buy. Then determine how much you bought if you were charged $33.

f(x)=3x+3;f(10)=33

200

An Uber driver charges $0.50 per mile and an initial fee of $3. A lift driver charges $0.60 per mile and an initial fee of $2. Which inequality represents the situation where the cost of using Lift is greater than taking and Uber, where m is miles?

A: 0.50m+0.60m<3+2    B: 0.50m+0.60m>3+2

C: 0.50m+3<0.60m+2    D: 0.50m+3>0.60m+2

C: 0.50m+3<0.60m+2

200

If A is a rational number and B is and irrational number, then the sum A+B is?

A: rational         B: imaginary

C: irrational       D: an integer

C: irrational

200

Solve for x:       6^-2x=6^(2-3x)

A: x=0               B: x=1

C: x=2              D: x=3

C: x=2

200

Which correlation coefficient would indicate a strong negative relationship between the number of text messages sent and the age of the sender?

A: -0.95            B: -0.82           C: 0.05

D: 0.28             E: 0.82

A: -0.95

300

A store charges their customers based on the number of items that they buy. Jane bought four items and was charged $15 and George bought twelve items and was charges $39. Write a function to model the cost based on the number of items you buy. Then determine how much you are charged if you purchase 22 items.

f(x)=3x+3;f(22)=69

300

Solve the inequality:

                        x-5>32

x>37
300

Identify the number which is IRRATIONAL.

A: -1.23          B: √8

C: 2/3             D: 0

B: √8

300
Solve for x:     4^3x+5=8^4x-3


A: x=3                  B: x=12/5

C: x=-2                D: x=19/6

D: x=19/6

300

Is it correlation or causation?

A recent study showed that college students were more likely to vote than their peers who were not in school.

Correlation

400

Luke is building a storage building and needs to have a slab of concrete poured. He knows the contractor charges and initial cost of $95 plus an additional $3.50 per square foot of concrete. Formulate a function that can be used to determine the cost, in dollars, to pour a concrete slab with an area of X square feet.

f(x)=3.5x+95

400

Solve the inequality: 

                      5/2r+10<55

r<18

400

Subtract:          5√27x - √75x

A: 10x                B: 10√x

C: 10√3x            D: -2√3x

C: 10√3x

400

3, 9, 27, 81,......

Which exponential function describes the given sequence?

A: y=(-1/3)^x          B: y=1/3^x

C: y=(-3)^x             D: y=3^x

D:y=3^x

400

Mr. Thompson notices that there was more trash in the hallways after 2nd period than 1st period.

Correlation

500

Harris is building a deck around his pool. His contractor charges $525 for labor plus an additional $4.75 per square foot for materials. Formulate a function that can be used to determine the cost, in dollars, for a deck with an area of  square feet.

f(x)=4.75x+525

500

Solve the inequality: 

                      11<-k+19

k<8

500

Which number can be added to a rational number to explain that the sum of rational number and a irrational number is irrational?

A: -8              B: 2   1/6

C: √5             D: 3√27

C: √5

500

Your new job guarantees you an eight percent raise for each year with the company. If your initial salary is $42,200, write an equation to model your salary after t years.

S=42,200(1.08)^t

500

Put the correlation coefficients in order from weakest to strongest:

             0.87, -0.81, 0.43, 0.07, -0.98

0.07, 0.43, -0.81, 0.87, & -0.98

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