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frutty [35]
3 years ago
6

Company A charges a fee of $5 for a cab ride, plus a charge of $0.50 for each mile driven. Company B charges a fee of $10 for a

cab ride, plus a charge of $0.10 for each mile driven. For what number of miles driven will the cost of a cab ride be the same for both companies?
Mathematics
2 answers:
Blababa [14]3 years ago
8 0
<span>Each set of prices can be described by a linear function. In this case, Company A would be y = 5 + .5x, where y is the fare and x is the number of miles driven. Similarly, Company B would b y = 10 + .1x. The definition of intersection tells us that two lines interstect only at that point where their x and y coordinates are identical, which means, of course, that their y coordinates will be identical. So to find the point of intersection we can examine the point where the y coordinates are the same. Which is to say, where 5 + .5x = 10 + .1x. We can simplify this to .5x - .1x = 10 - 5, then .4x = 5, and finally, x = (5/.4) = 12.5. In other words, the fares will be equal when the miles driven is 12.5</span>
ivann1987 [24]3 years ago
3 0
Company A: 5$+0.5$*x miles
Company B: 10$+0.1$*x miles
5+0.5x=10+0.1x
0.5x-0.1x=10-5
0.4x=5, x=5/0.4
x=12.5miles.
For 12.5 miles driven, coast of a cab ride will be the same for both companies.
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