4) Mario paid $44.25 in taxi fare from the hotel to the airport. The cab charged $2.25 first mile plus $3.25 for each additional mile. How many miles was it from the hotel to the airport?

Answer 1

This is a linear function.

Charge, c(x) = 2.25 + 3.25(x-1) = 2.25+3.25x-3.25 = 3.25x-1

44.25 = 3.25x-1

3.25x=45.25

x = 45.25/3.25 ≈ 13.92 miles