Question

PLEASE HELP ASAP! 30 pts

During a 4-month-long drought, the water level in a lake changed by
−3 1/2 feet. The water level changed at the same rate each month.

What is amount the water level changed in 1 month?

(In fraction form)

Answer 1

First off, let’s convert -3 1/2 into -7/2, which is easier for calculation.

Lets give an easier example for a moment — imagine the water had risen by 12ft in 4 months. That means, on average, it rose about 3 feet each month (12/4 = 3). We do the same here — divide by 4 (or multiply by 1/4):

-7/2 * 1/4 = -7/8

So the water level decreased for about -7/8 feet each month on average.