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

can anyone help me?

To express Mark's height above sea level over time, we need to consider his starting point and the rate at which he is climbing.

In this case, Mark starts at a height of 1 mile above sea level and climbs at a rate of 1.5 miles per hour.

We can represent his height above sea level (h) as a function of time (t) using the formula:

h = starting height + (climbing rate * time)

Where starting height is 1 mile and climbing rate is 1.5 miles per hour.

Now, let's substitute the values into the formula:

h = 1 + (1.5 * t)

Therefore, the correct function would be:

f(x) = 1 + 1.5x