Math Test Set 12 - 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

Math-Word problems

3. Eight more than two times an unknown number is 0. Find the unknown number.

A.-4

B.4

C.-2

D.2

Question 3 of 10

Math-Exponents

4. Simplify the given exponential expression.

\(x^{8}\cdot x^{3}\)

A.\(x^{11} \)

B.\(-x^{11} \)

C.\(x^{24} \)

D.\(-x^{24} \)

Question 4 of 10

5. Simplify the given exponential expression.

\((−2y)^{3}\)

A.\(-8y^{3} \)

B.\(8y^{3} \)

C.\(-7y^{3} \)

D.\(-16y^{3} \)

Question 5 of 10

Math-Evaluate expression

6. Evaluate the expression at the given values of x and y.

|x| − |y| at x = 0 and y = 2

A.−2

B.2

C.0

D.1

Question 6 of 10

7. Evaluate the expression at the given value of x.

12x+ 10 at x = −12

A.-134

B.134

C.123

D.-144

Question 7 of 10

Math-Solution of equations

8. Use the substitution method to solve each of the following systems.

−2x − 2y = 26
−7x + y = 19

A.(-4,-9)

B.-(-4,-9)

C.(4,9)

D.(4,-9)

Question 8 of 10

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

2x + 2y = 4
3x − 5y = 3

A.\((\frac{13}{8}, \frac{3}{8}) \)

B.\(-(\frac{13}{8}, \frac{3}{8}) \)

C.\((\frac{13}{9}, \frac{3}{9}) \)

D.\(-(\frac{13}{9}, \frac{3}{8}) \)

Question 9 of 10

Math-Inequalities

10. Solve the given inequality.

−10x − 4 ≤ 18

A.\(-\frac{11}{5}\)

B.\(-\frac{5}{11}\)

C.\(1\frac{5}{6}\)

D.\(-1\frac{5}{6}\)

Question 10 of 10