# Chapter 3 Study Guide: Quadratics

10 Questions  Settings  MAT 150 - Algebra

Questions and Answers
• 1.
Give the coordinates for the vertex of the quadratic function .
• A.

(1, -27)

• B.

(-1, -15)

• C.

(3, -15)

• D.

(1, 27)

• 2.
Give the coordinates of the vertex for the quadratic function
• A.

(7, -2)

• B.

(-7, 2)

• C.

(-7, -2)

• D.

(7, 2)

• 3.
Solve for x using factoring:
• A.

5 and 4

• B.

-2 and -3

• C.

-4 and -1

• D.

4 and 1

• 4.
Solve for x using factoring:
• A.

1/2 and -2/3

• B.

-1/2 and 2/3

• C.

-2 and 1

• D.

2 and -1

• 5.
Solve for x using the square root method:
• A.

9 and 1

• B.

9

• C.

9 and -1

• D.

629

• 6.
Solve using the quadratic formula:  Answer Choices: A.  B.  C.  D.
• A.

A

• B.

B

• C.

C

• D.

D

• 7.
Find the equation of the quadratic function whose graph is a parabola passing through the points (0, -2), (-2, 12) and (3, 7).
• A.

Y = 2x^2 + 3x + 2

• B.

Y = 2x^2 - 3x - 2

• C.

Y = 5/3 x^2 - 8/3 x - 2

• D.

Y = -2x - 2

• 8.
The profit from producing and selling x units of product is given by the function  dollars.  What is the maximum profit that can be made producing the units of product?
• A.

\$2050

• B.

\$4100

• C.

\$120,000

• D.

\$1,140,750

• 9.
If a ball is dropped from the top of a 400-ft-high building, its height S in feet is given by , where t is in seconds.  In how many seconds will it take the ball to hit the ground?
• A.

400 seconds

• B.

25 seconds

• C.

5 seconds

• D.

5 and -5 seconds

• 10.
Using the table on page 235 #50 in your textbook, find a quadratic model that fits the data in the table with x = 0 in 2000.
• A.

Y = -0.005x^2 + 0.754x + 8.512

• B.

Y = 3.12x - 2.54

• C.

Y = -0.004x^2 - 0.754x + 8.512

• D.

Y = -16x^2 + 3.243x + 15.7

Related Topics