SOLUTION: delivery charges £4.00 fixed cost 60p per mile bob lives 12 miles away. how much will jenny charge to delivery the cakes.

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Question 933109: delivery charges
£4.00 fixed cost 60p per mile
bob lives 12 miles away. how much will jenny charge to delivery the cakes.
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
delivery charges: cost C=cost_per_mile%2Bfixed_cost
£4.00
60p=£0.60 per mile

for x miles cost will be 0.60x
equation:
cost C=0.60x%2B4.00
if bob lives 12 miles away, means x=12
C=0.60%2A12%2B4.00
C=7.2%2B4.00
C=11.2 -> jenny will charge £11.2 to delivery the cakes