How would you write a algerbraic expression depicting the cost of renting a car for (n) days if the daily charge is $24.98 plus 12 cents a mile?

Daily Charge(m) = .12m + 24.89 , where m is the number of miles driven per day

Cost(n) = n(.12m + 24.89) where n is the number of days, and the same number of miles are driven each day.

(Silly question)