AnswersWSFCS Math 2 CRUnit Test

Unit Test — Unit test Answers

15 verified answers
1
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What are the values of x in the equation x2 – 6x + 9 = 25?

A
x = –2 or x = 8
B
x = –1 or x = –11
C
x = 1 or x = 11
D
x = 2 or x = –8
2
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Solve for in the equation .

Question illustration
A
x = 3 plus-or-minus StartRoot 23 EndRoot
Option A
B
x = 3 plus-or-minus StartRoot 51 EndRoot
Option B
C
x = 3 plus-or-minus StartRoot 41 EndRoot
Option C
D
x = 3 plus-or-minus StartRoot 5 EndRoot
Option D
3

What is one solution of the following system?

Question illustration
A
(–6, 0)
B
(–2, 4)
C
(0, –6)
D
(4, –2)
4

Solve the radical equation.Which is an extraneous solution to the radical equation?

Question illustration
A
m = −5
B
m = −2
C
m = 5
D
There are no extraneous solutions to the equation.
5

During a pumpkin launching contest, two pumpkins are launched at the same time. The path of pumpkin A is modeled by the equation y = –0.01x2 + 0.32x + 4. The path of pumpkin B is modeled by the equation y = –0.01x2 + 0.18x + 5. If x represents the distance the pumpkin traveled in feet and y represents height of the pumpkin in feet, what does the intersection point of the equations represent?

A
the height at which the pumpkins reach their greatest horizontal distance from the launch site
B
the horizontal distance of the pumpkins from the launch site when they reach the ground
C
the starting height of the pumpkins when they are at the launch site
D
the horizontal distance of the pumpkins from the launch site when their heights are the same
6

Solve the radical equation. What is the true solution to the radical equation?

Question illustration
A
1
B
7
C
There are no true solutions.
D
Both 1 and 7 are true solutions.
7

What is the value of i 20+1?

1
1
–
–1
–
–i
i
i
8

Which is the graph of ?

Question illustration
A
Option
B
Option
C
Option
D
Option
9

For what values of m does the graph of y = mx2 – 5x – 2 have no x-intercepts?

A
m greater-than negative StartFraction 25 Over 8 EndFraction
Option A
B
m less-than negative StartFraction 25 Over 8 EndFraction
Option B
C
m less-than StartFraction 25 Over 8 EndFraction
Option C
D
m greater-than StartFraction 25 Over 8 EndFraction
Option D
10

The function f(x) = – 3 is graphed on the coordinate grid.

Question illustration
A
y > –5
B
y > –3
C
y > 0
D
y > 3
11

What is the domain of the function f(x) = + 5?

Question illustration
x
x ≥ –9
x
x ≥ –5
x
x ≥ 5
x
x ≥ 9
12

Which is equivalent to after it has been simplified completely?

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
13

What is the solution to the equation 3 + = 4?

Question illustration
A
y =
Option A
B
y =
Option B
C
y = 1
D
y = 4
14

The function y = is translated using the rule (x, y) → (x – 7, y + 2)to create f(x).What is the domain of f(x)?

Question illustration
{
{x | x > –7}
{
{x | x > 7}
{
{x | x > –2}
{
{x | x > 2}
15

Solve for in the equation .

Question illustration
A
x = negative 11 plus-or-minus StartFraction 25 Over 2 EndFraction
Option A
B
x = negative eleven-halves plus-or-minus StartFraction 25 Over 2 EndFraction
Option B
C
x = negative 11 plus-or-minus StartFraction 5 StartRoot 5 EndRoot Over 2 EndFraction
Option C
D
x = negative eleven-halves plus-or-minus StartFraction 5 StartRoot 5 EndRoot Over 2 EndFraction
Option D

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