SOLUTION: Taylor earned $48 for 6 hours of babysitting and $68 for 8.5 hours of babysitting. How long would she have to babysit to earn $32?

Question 1013439: Taylor earned $48 for 6 hours of babysitting and $68 for 8.5 hours of babysitting. How long would she have to babysit to earn $32?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Taylor earned $48 for 6 hours of babysitting and $68 for 8.5 hours of babysitting. How long would she have to babysit to earn $32?
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You have 2 points relating earnings and time
e = mt + b where "e" is earniings and "t" is time
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slope = m = (68-48)/(8.5-6) = 20/2.5 = 8
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Substitute to solve for "b"::
48 = 8*6 + b
b = 0
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e = 8t
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Ans:
Solve 32 = 8t
t = 4 hours
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Cheers,
Stan H.
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