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

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

anonymous · Answer

The second, assuming x is in hours.

anonymous · Answer

b...

anonymous · Answer

It starts from the y-intercept (x = 0 y = 1) and the slope would be 1.5