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Using linear systems to solve problems (1)

bkan21

New member
Sep 22, 2012
6
Sook-Lee wants to rent a car for a day so she can visit her sister at university. She has called two car rental agencies. Rent-a-Heap charges \$50 per day, plus \$0.12/km. Kurt's Rent-a-Car charges \$40 per day, plus \$0.20/km. At what distance will the cost of renting of a car be the same from companies?
 
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tkhunny

Well-known member
MHB Math Helper
Jan 27, 2012
267
We are warned that it is a linear system. There should be a lot of y - mx + b going on. Maybe Ax + By = C.

Rules #1 - Name Stuff!!

D = Daily Charge
M = Mileage Charge

Now what?
 
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tkhunny

Well-known member
MHB Math Helper
Jan 27, 2012
267
* y = mx + b