Multiple Choice
Identify the choice that best completes the
statement or answers the question.
|
|
|
Simplify the expression.
|
|
|
1
|
|
|
|
2
|
|
|
|
3
|
Dalco Manufacturing estimates that its weekly profit,
P, in hundreds of dollars, can be approximated by the formula  , where x is the
number of units produced per week, in thousands.
| a. | How
many units should the company produce per week to earn the maximum profit? | | b. | Find the maximum weekly profit. | | |
A | 4,000 units; $800 | C | 4,000 units;
$1000 | B | 2,000 units; $1600 | D | 2,000 units;
$1200 |
|
|
|
4
|
Find the additive inverse of  .
|
|
|
Use the elimination method to solve the
system.
|
|
|
5
|
A | (–1, 2) | B | (1,
–2) | C | (2, –1) | D | (–2,
1) |
|
|
|
Solve the equation.
|
|
|
6
|
|
|
|
7
|
|
|
|
Use the Quadratic Formula to solve the
equation.
|
|
|
8
|
|
|
|
Solve the equation by finding square
roots.
|
|
|
9
|
|
|
|
10
|
Use a graphing calculator to solve the equation  . If necessary, round to the nearest hundredth.
A | –3.55, 1.88 | C | –1.36,
1.36 | B | –0.94, 1.77 | D | –1.77,
0.94 |
|
|
|
11
|
What is the solution to the following system of
equations?
A | (–5, 4) | C | (4,
–7) | B | (5, –5) | D | (4,
–5) |
|
|
|
12
|
A group of 48 people attended a ball game. There were three
times as many children as adults in the group. Set up a system of equations that represents the
numbers of adults and children who attended the game and solve the system to find the number of
children who were in the group.
A |  ; 36 adults, 12 children | C |  ; 23 adults; 36 children | B |  ; 12 adults, 36 children | D |  ; 36 adults; 23
children |
|
|
|
13
|
The function  models the height y in feet of
a stone t seconds after it is dropped from the edge of a vertical cliff. How long will it take
the stone to hit the ground? Round to the nearest hundredth of a second.
A | 0.25 seconds | C | 6.84
seconds | B | 9.67 seconds | D | 4.83
seconds |
|
|
|
14
|
Solve by factoring.
 = 0
|
|
|
Solve the proportion.
|
|
|
15
|
|
|
|
16
|
Which is the graph of  ?
|
|
|
17
|
Write  in vertex form.
|
|
|
Solve the system by the method of
substitution.
|
|
|
18
|
A | (0, –2, –6) | B | (0, 0,
–6) | C | (0, 0, 6) | D | (–3, 0,
–6) |
|
|
|
19
|
Identify the vertex and the y-intercept of the graph
of the function  .
A | vertex: (2, 5);
y-intercept:
–3 | C | vertex: (2, –5);
y-intercept:
9 | B | vertex: (–2, 5);
y-intercept:
–3 | D | vertex: (–2, –5);
y-intercept:
–8 |
|
|
|
20
|
Find  .
A | 21 | B |  | C |  | D | –7 |
|