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?

Question

phi · Answer

one way to answer the question is check each function and see which one "works"

for example,  what is Mark's height at time "zero" before he starts climbing ?
put 0 in for "time" in each equation and see if any give the correct answer.

then test for when time is 1 hour.

can you do that ?

cherie_magee · Answer

not really...

phi · Answer

First, what is Mark's height at the beginning (at time zero) ?

cherie_magee · Answer

It doesn't say .

phi · Answer

what do you think this means

Mark starts a rock climb when he is 1 mile above sea level

?