Question

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?

Answer 1

-7/8

Step-by-step explanation:

i did the 3.15 Unit Test

Answer 2

In 4 months, the water level changed in the lake by -3.5 ft.
We want to know the change in one month knowing that the change is the same for all months.
To do that, we can simply do a cross multiplication as follows:
change per month=(1*-3.5)/4 = -0.875 ft