The Monthly Cost of Driving a Car Depends on the Number

question 18

Multiple Choice

The monthly cost of driving a car depends on the number of miles driven. Julia found that in October it cost her $\$ 200$ to drive 300 mi and in July it cost her $\$ 350$ to drive 600 mi. Express the monthly cost C as a function of the distance driven d assuming that a linear relationship gives a suitable model.

• A) \(C=-50 d+0.5\)
• B) \(C=-50 d-0.5\)
• C) \(C=0.5 d+50\)
• D) \(C=2 d+50\)
• E) \(C=0.5 d-50\)

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