A snowstorm began on Monday evening. It snowed steadily until 6:00 am on Tuesday morning when the snow was 12 inches deep. Kevin wrote the equation y = 3t - 6 to model the depth, y, in inches, of the snow on Tuesday morning, t hours after midnight. Does Kevin's equation correctly predict the total snowfall of 12 inches at 7:00 am on Tuesday morning?

Question

Mathematics

Eugene Kaufman

11 January, 08:47

A snowstorm began on Monday evening. It snowed steadily until 6:00 am on Tuesday morning when the snow was 12 inches deep. Kevin wrote the equation y = 3t - 6 to model the depth, y, in inches, of the snow on Tuesday morning, t hours after midnight. Does Kevin's equation correctly predict the total snowfall of 12 inches at 7:00 am on Tuesday morning?

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Answers (1)

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Alessandra Vincent · Answer 1

what is expected at 7am is 15 inches deep snow but what we have is 12 inches deep snow. The equation has failed in its prediction.

Step-by-step explanation:

In this question, we are asked to calculate if the prediction made by an equation modeled is correct.

Firstly let's look at the equation in question;

y = 3t - 6

where y is the snow depth and t is the number of hours after midnight.

now we are looking at 7am, that's 7 hours past 12am, meaning 7 hours after midnight.

let's plug the value of t as 7 into the equation

y = 3 (7) - 6

y = 21-6

y = 15 inches

according to the equation by Kevin, what is expected is 15 inches deep snow but what we have is 12 inches deep snow. The equation has failed in its prediction.