Question

The water level in Rick Lake changes at an average of -7/16 inch every 3 years.

Based on the rate above, how much will the water level change after one year? Show your calculations and model your answer on the vertical number line, using 0 as the original water level.

Answer 1

-7/48

Explanation:

1. Ok, so if there is a change of -7/16 inches every 3 years, then you just basically have to divide -7/16 inches by 3. And since you can't divide fraction and only multiply the reciprocal of a fraction you would say -7/16 * 1/3 = -7/48.
2. If you want to mark it on a number line, you would basically just find -7/16 and divide the distance from 0 to -7/16 into 3 portions and mark the 1st third of the distance your answer.