What do you do with a negative exponent

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Which of the following circles have their centers in the third quadrant? check all that apply.