1. Combine it All Together

2. A function is described by the equation f (x) = x2 + 5
A function is described by the equation f (x) = x The replacement set for the independent variable is {1, 5, 7, 12}. Which of the following is contained in the corresponding set for the dependent variable?
A 0
B 6
C 7
D 15

3. Which equation could be used to generate this table of values?
A y = −2x
B y = 2x + 1
C y = x + 1
D y = x2 + 1

4. Vicki works as a salesclerk in a clothing store
Vicki works as a salesclerk in a clothing store. She earns $10 per hour plus a commission of 6% of her total sales. Which equation represents e, her total earnings when she works h hours and sells a total of d dollars in merchandise?
A e = 10h d
B e = 10h + 0.6d
C e = 6h + 10d
D e = 0.06h + 10d

5. Troy borrowed money from his father so that he could buy a used car.
The table shows the remaining balance, b, of Troy’s loan after each payment.
Which function can be used to describe this relationship?
A b = p
B b = 4135 − 225p
C b = p
D b = 3685 − 225p

6. The height, h, of a football when kicked with respect to time, t, is described by the function h = −16t2 + 48t. Which graph shows the correct sketch of this function? A B

7. Jake studied the parabola shown below.
Which is an accurate conclusion that Jake could make about this parabola?
A The vertex is at (−2, 0).
B The minimum value is at (0, −4).
C The maximum value is at (2, 0).
D The axis of symmetry is the x-axis.

8. Which of the following represents the parent function of y = x2 − 2x − 15?
A y = x
B y = x2 − 15
C y = x2
D y = −2x

9. Which of the following are the domain and range for the graph shown below? A 0 ≤ x ≤ 4 0 ≤ y < 36 B 0 ≤ x ≤ ≤ y ≤ 3.5 C 0.5 < x < < y < 36 D 0.5 ≤ x ≤ ≤ y ≤ 36

10. Which statement is true for the graph below?
A Ms. Goodlett will earn $500 if she sells $5000 worth of merchandise.
B Mr. Murphy will not earn any money if he does not sell any merchandise.
C Mr. Lefeber will earn $1000 if he sells $1000 worth of merchandise.
D Ms. Cho will earn $700 if she sells $5000 worth of merchandise.

11. Which equation best represents the area, A, of the rectangle below?
A A = 2x + 2(x + c)
B A = x2 + (x + c)2
C A = x(x + c)
D A = 2x(x + c) x
x + c