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

Answer 1

Answer:

f(x) =1.5x.

Step-by-step explanation:

The expression f(x) =1.5x, will express Mark's height over time.

Let the time be denoted as x.

We know that distance travelles= Speed× Time.

Here it is given that speed =1.5 miles per hour.

Therefore distance travelled= 1.5×x.