Math Practice Test Set 8 - My Career Tools

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1. \(\frac{x^{2}+3}{x(x+5)}\)

Find the values that make this rational expression undefined.

A.x = 0 or −5

B.x = 0 or 7

C.x = 0 or 5

D.x = 2 or 4

Question 1 of 10

2. Which equation is a direct variation?

A.y = − 0.7x

B.y= \(\frac{21}{x}\)

C.y-x=4

D.y=3x+2

Question 2 of 10

3. The scatter plot shows what type of correlation?

A.low positive correlation

B.low negative correlation

C.high positive correlation

D.high negative correlation

E.no correlation

Question 3 of 10

4. Factor. \(x^{2} − 81\)

A.(x + 9)(x − 9)

B.(x + 9)(x + 9)

C.(x − 9)(x − 9)

D.Unfactorable

Question 4 of 10

Math-Distributive Property

5. Use the distributive property to expand the given expression.

\(2st(−4s^{2}+ 8st − 10t^{2})\)

A.\(-8s^{3}t + 16s^{2}t^{2}- 20st^{3}\)

B.\(8s^{3}t + 16s^{2}t^{2}- 20st^{3}\)

C.\(-10s^{3}t + 16s^{2}t^{2}- 20st^{3}\)

D.\(-8s^{3}t - 16s^{2}t^{2} +20st\)

Question 5 of 10

Math-Functions

6. Given f(x) = \(5x^{4} \)− 4x −6, evaluate f(−2).

A.82

B.81

C.-2

D.-164

Question 6 of 10

Math-Square Roots

7. List all square roots of the given number. If the number has no square roots, choose “none”.

−289

A.None

B.2

C.1

D.5

Question 7 of 10

Math- Equations

8. Solve the equation.

2x − 2(4 − 9x) = 8(6x + 2)

A.\(-\frac{6}{7}\)

B.\(\frac{7}{6}\)

C.\(-\frac{7}{6}\)

D.\(\frac{12}{14}\)

Question 8 of 10

Math-Solution of equations

9. Use the elimination method to solve each of the following systems.

x + 4y = 0
9x − 7y = −43

A.(-4, 1)

B.(4, 1)

C.4

D.-4

Question 9 of 10

Math-Percent to decimal

10. Convert the given percent to a decimal.

0.6379%

A.0.006379

B.63,79

C.0.6379

D.6.379

Question 10 of 10