Math Exponents, Radicals, and Scientific Notation

Question 1

Simplify: (3²)³

Accepted Answer

729

Answer

18

Answer

243

Answer

36

Question 2

Which of the following equals 4.5 × 10⁻³?

Accepted Answer

0.0045

Answer

0.045

Answer

4500

Answer

45000

Question 3

Simplify: √72

Accepted Answer

6√2

Answer

8√2

Answer

36√2

Answer

4√3

Question 4

What is the value of 27^(2/3)?

Accepted Answer

9

Answer

3

Answer

18

Answer

6

Question 5

Which expression is equivalent to x⁻⁴?

Accepted Answer

1/x⁴

Answer

-x⁴

Answer

x⁴

Answer

−1/x⁴

Question 6

The distance from Earth to the Sun is approximately 1.5 × 10⁸ km. The distance from Earth to the Moon is approximately 3.8 × 10⁵ km. Approximately how many times farther is the Sun than the Moon?

Accepted Answer

395 times

Answer

3950 times

Answer

39.5 times

Answer

3.95 times