To raise a term with an exponent to another exponent, retain the base and multiply the exponents:

A number in scientific notation has the format 0.000 x 10^exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:

9,070,000 in scientific notation is 9.07 x 10⁶

The factors of a number are all positive integers that divide evenly into the number. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36.

Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):

2 + (4 + 2) ÷ 5 x 4 - 3²
P: 2 + (6) ÷ 5 x 4 - 3²
E: 2 + 6 ÷ 5 x 4 - 9
MD: 2 + \( \frac{6}{5} \) x 4 - 9
MD: 2 + \( \frac{24}{5} \) - 9
AS: \( \frac{10}{5} \) + \( \frac{24}{5} \) - 9
AS: \( \frac{34}{5} \) - 9
AS: \( \frac{34 - 45}{5} \)
\( \frac{-11}{5} \)
-2\(\frac{1}{5}\)

Average speed in miles per hour is the number of miles traveled divided by the number of hours:

Solving for time:

time = \( \frac{\text{distance}}{\text{speed}} \)
time = \( \frac{315mi}{45mph} \)
7 hours