Question

A meteorologist measured twenty inches of snow on the ground at the start of the week. At the end of the week, four inches of snow remained. Which equation represents the total snowfall T when x represents the daily change in the snowfall amount?

a) T=20x−4
b) T=20+4x
c) T=20−4x
d) T=4x−20

Answer 1

The equation that represents the total snowfall is T = 20 - 4x. At the start of the week, there were 20 inches of snow on the ground. The equation represents the decrease in snowfall over the week.

Step-by-step explanation:

The equation that represents the total snowfall T when x represents the daily change in the snowfall amount is T = 20 - 4x (option C).

At the start of the week, there were 20 inches of snow on the ground. During the week, the snowfall decreased by x inches each day. At the end of the week, there were 4 inches remaining. This means that the total snowfall decreased by 20 - 4 inches, which can be represented by the equation T = 20 - 4x.

For example, if the daily change in the snowfall amount is 3 inches, the total snowfall can be calculated as T = 20 - 4(3) = 20 - 12 = 8 inches.