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

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

Step-by-step 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 :)

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step-by-step explanation:

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