Math Practice Test Set 8 - My Career Tools

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1. \(\frac{8}{y+6}\)

Find the value that makes this rational expression undefined.

A.y = − 4

B.y = 0

C.y = 3

D.y = − 6

Question 1 of 10

2. The relation graphed below is a function.

A.True

B.False

Question 2 of 10

3. Given two polygons, the first one having more sides than the second, let the following rule describe how to map the first polygon to the second polygon. (To help illustrate, refer to the two polygons pictured below.) Label the vertices of each polygon A, B, C, etc. Then, each vertex of polygon 1 is mapped to its corresponding vertex on polygon 2 (A to A, B to B, etc.). For all extra vertices of the first polygon (in this case G and H), they map to the final vertex of the second polygon (in this case to F). Is this rule a function? If not, why not?

A.Yes, this is a function.

B.No, functions relate only to equations and graphs.

C.No, because multiple vertices of the first polygon are mapped to the same vertex on the second polygon, which is the same as failing the vertical line test.

D.No, because this is not continuous; there is only a finite set of points, while functions (graphs) are an infinite set of points.

Question 3 of 10

Math- Equations

4. Solve the given equation for x.

5x − 14 = −79

A.−13

B.−14

C.6.5

D.13

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-Percent to decimal

6. Convert the given decimal to a percent.

1.681

A.168.1%

B.1.681%

C.16.81%

D.0.1681%

Question 6 of 10

Math-Percent of number

7. 37.5% of what number is 57?

A.152

B.57

C.150

D.60

Question 7 of 10

Math-Square Roots

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

256

A.16, -16

B.15, -15

C.32, -32

D.-15, 15

Question 8 of 10

Math-Exponents

9. Simplify the given exponential expression.

\((3w^{9})^{4}\)

A.\(81w^{36} \)

B.\(-81w^{36} \)

C.\(80w^{36} \)

D.\(27w^{36} \)

Question 9 of 10

Math-Combining Like Terms

10. Combine like terms by first rearranging the terms, then using the distributive property to factor out the common variable part, and then simplifying.

−8 + 17n + 10 + 8n

A.2 + 25n

B.2n + 25

C.2 + 30n

D.4 + 25n

Question 10 of 10