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Mathematics 9 Online
OpenStudy (anonymous):

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

OpenStudy (nikolas):

Start by identifying the variable - what is it we want to know? What do we already know about it?

OpenStudy (anonymous):

f(x) = 1+1.5x

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