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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

Respuesta :

 f(x) = 1 + 1.5x 

I hope this helps ya :)
altavistard
Write a linear function in the form y = mx + b.  Here, b = initial value = y intercept = 1 mile.  m = slope = 1.5 mph.  Let x represent time in hours.

Then y = (1.5 mph)x + 1 mile  (ans)
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