Posted by Anonymous on Tuesday, May 21, 2013 at 2:50pm.
a 2mi cab ride costs $4.25. a 7mi cab ride costs $8.50. which equation models the cost y of a cab ride that is x miles?

help  Steve, Tuesday, May 21, 2013 at 3:30pm
a+2b = 4.25
a+7b = 8.50
(a,b) = (51/20,17/20)
so,
y = 2.55 + .85x 
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