Question

the height of a lake decreased by 20 inches over several weeks. each week the lake decreased by 4 inches. the following equation represents this situation: -20 ÷ -4 = 5. which of the following best describes the meaning of 5? (1 point) o the new height of the lake is 5 inches. o the time it takes the lake to decrease by 20 inches is 5 weeks. o the time it takes the lake to decrease by 4 inches is 5 weeks. o the change in the height of the lake is 5 inches.

Explanation:

The total decrease in lake - height is 20 inches and the decrease per week is 4 inches. When we divide the total decrease (-20, negative as it's a decrease) by the decrease per week (-4, also negative as it's a decrease), we get the number of weeks it took for the total decrease to occur.

Answer:

The time it takes the lake to decrease by 20 inches is 5 weeks.