Question

Mark starts a rock climb when he is 1 mile above sea level. He can climb at the rate of 1.5 miles per hour. Which of the following functions would express Mark's height above sea level over time? f(x) = 1.5x f(x) = 1 + 1.5x f(x) = 2.5x EXPLAIN HOW YOU GOT YOUR ANSWER PLEASE

Answer 1

The answer is f(x) = 1 + 1.5x

Explanation:

If Mark started a rock climb when he was 1 mile above sea level, and we're trying to find Mark's height above sea level over time, we would need to add 1 to our function. And since he climbed 1.5 miles an hour(x) you must add that as well. So far, we have, 1 + 1.5x.

Therefore, the answer would be f(x) = 1 + 1.5x.

Hope I helped :)

Answer 2

f(x)= 1+1.5x because he starts at one mile and climbs 1.5 miles every hour after that and x represents hours