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Problem 20 Medium Difficulty

a. How much does it cost to rent a car for 3 days if the car is driven $280 \mathrm{mi} ?$
b. Find a formula that models the cost $C$ of renting this car for $n$ days if it is driven $m$ miles.
c. If the cost for a 3 -day rental was $\$ 140$, how many miles was the car driven?


b. $C=30 n+10 m$
c. $m=5$ miles


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Video Transcript

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