Math Test Set 11 - My Career Tools

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1. Suppose y varies inversely with x and x = 12 when y = 3. What is the equation of the inverse variation?

A.\(\frac{y}{x}\) = 36

B.y = \(\frac{12}{3}\)

C.y = \(\frac{36}{x}\)

D.12 = \(\frac{3}{y}\)

Question 1 of 10

Math-Evaluate expression

2. \(3x^{2} - 2y^{2}\) at \(x = −3\) and \(y = −2\)

A.19

B.27

C.-19

D.-27

Question 2 of 10

3. Simplify the given expression.

−24/(−6)(−1)

A.-4

B.4

C.5

D.-5

Question 3 of 10

Math-Exponents

4. Simplify the given exponential expression.

\(4^{n} \cdot 4^{8n+3}\)

A.\(4^{9n+3} \)

B.\(-4^{9n+3} \)

C.\(4^{9n-3} \)

D.\(-4^{9n-3} \)

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-Slope

6. Calculate the slope of the line passing through the points P and Q. Be sure to reduce your answer to lowest terms

P(−18, 8), Q(3,−10)

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

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

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

D.\(\frac{1}{26}\)

Question 6 of 10

Math-Solution of equations

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

−32x + 7y = −238
8x − 4y = 64

A.(7,-2)

B.(7,2)

C.(6,-2)

D.(7,-6)

Question 7 of 10

8. Which of the numbers following the given equation is a solution of the given equation?

x + 2 = 4; 3, 2, 9, 5

A.2

B.-2

C.4

D.8

Question 8 of 10

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

x + 9y = 46
7x − 4y = −27

A.(-1,5)

B.(-12,10)

C.(-2,10)

D.-(-1,5)

Question 9 of 10

Math-Percent to decimal

10. Convert the given percent to a decimal.

8%

A.0.08

B.0.8

C.0.008

D.80

Question 10 of 10