SOLUTION: i am having trouble taking the information in a word problem and plugging it into a formula. if i see one example i can do the others. the problem is: A driver is initially 270

Question 536637: i am having trouble taking the information in a word problem and plugging it into a formula. if i see one example i can do the others. the problem is:
A driver is initially 270 miles from home, traveling towards home on a straight interstate at 72 mph. write a formula for a function y=D(x)that models the distance between the driver and home after x hours.
any help would be appriciated!!!!

Found 2 solutions by josmiceli, solver91311:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
= ( distance to home ) - ( distance traveled )
distance traveled = rate x time
= distance traveled after hrs

( note that this function can't be negative.
That would mean the driver overshot his home )
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Distance equals rate times time. You are given a rate of 72 mph and a time of hours. So the distance traveled in hour at 72 mph is miles. But since he is starting at 270 miles from home going toward home the distance from home is 270 miles minus the distance he has traveled in hours, hence:

John

My calculator said it, I believe it, that settles it

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