algebra 1 math word problem?
A car rental company charges a base cost to rent a car as well as a cost for each mile driven. Their web site says that the total cost for renting a car can be found by using the formula 4d - 50c = -1,000, where c is the total cost of the rental and d is the number of miles driven. Using this equation, what is the base cost for renting the car and what is the cost for each mile driven
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base cost (no miles driven),
4(0) - 50c = -1000
-50c = -1000
c = 20
cost of each mile:
4d - 50c = -1000
4d + 1000 = 50c
(4/50)d + 20 = c
slope, 4/50 = 8/100 = $0.08 per mile