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If C(m) = 0.50m + 30 represents the cost of renting a car, how many miles were driven if the cost is $130?

If C(m) = 0.50m + 30 represents the cost of renting a car, how many miles were driven if the cost is $130?
asked 178k views
3 votes
If C(m) = 0.50m + 30 represents the cost of renting a car, how many miles were driven if the cost is $130?

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User Ihmahr
by
8.2k points

2 Answers

4 votes

Answer:

200

Explanation:

answered
User Timberline
by
8.2k points
2 votes

Answer:

200 miles

Explanation:


C(m)=0.50m+30\\\\\text{Put}\ C(m)=130\ \text{and solve the equation for }\ m:\\\\130=0.50m+30\qquad\text{subtract 30 from both sides}\\\\130-30=0.50m+30-30\\\\100=0.50m\qquad\text{multiply both sides by 2}\\\\(2)(100)=(2)(0.50m)\\\\200=1m\to m=200

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User Scorer
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