Question 526618: a taxi begins a fare with inital charge of $2 on the meter and charges 20 cents per one-tenth a mile. how much will a 10-mile journey cost?
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website!
If it's 20 cents per one-tenth of a mile, then it's 200 cents per mile (multiply both quantities by 10)
So it's really $2 per mile.
So if you drive x miles, then the variable cost is 2x dollars.
Add this to the fixed cost to get 2x+2
So the total fare for driving x miles is 2x+2 dollars.
This means that the cost equation is
c = 2x+2
Now if you drive 10 miles, then x = 10 and
c = 2x+2
c = 2(10)+2
c = 20+2
c = 22
which means that a 10 mile journey will cost 22 dollars.
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Jim
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