SOLUTION: Melissa is driving to Philadelphia. Suppose that the remaining distance to drive (in miles) is a linear function of her driving time (in minutes). When graphed, the function gives

Question 785266: Melissa is driving to Philadelphia. Suppose that the remaining distance to drive (in miles) is a linear function of her driving time (in minutes). When graphed, the function gives a line with a slope of -0.85 . See the figure below.
Melissa has 34 miles remaining after 43 minutes of driving. How many miles will be remaining after 51 minutes of driving?
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
IF STUDYING EQUATION OF A LINE:
If = distance (miles) to Philadelphia is a function of = minutes driving, the equation for the function/loine is
(point-slope form of the equation for the line)
For , <-->
For , -->-->-->-->
After 51 minutes of driving, Melissa will be miles from Philadelphia.

FOR FIFTH GRADERS:
Melissa is driving 0.85 miles per minute, or ).
In of driving, Mellisa would travel
,
so after 51 minutes of driving the distance remaining will be
,
less than the 34 miles remaining after 43 minutes of driving.
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