while observing the fare meter in a taxi, a student records the following data: reading on taxi fare meter time (minutes) meter
reading 0 $5.25 10 $13.75 20 $22.25 30 $30.75 what is the equation that relates the cost, c(t), of the taxi ride and time, t, in minutes? what is the cost of a 12-minute taxi ride?
y = mx + b (0,5.25)...x = 0 and y = 5.25 slope(m) = 0.85 now we sub, we r looking for b, the y int 5.25 = 0.85(0) + b 5.25 = b
so ur equation is : y = 0.85x + 5.25 or C(t) = 0.85t + 5.25 <==
cost of a 12 min taxi ride.....sub in 12 for t C(t) = 0.85t + 5.25 C(12) = 0.85(12) +5.25 C(12) = 10.20 + 5.25 = 15.45 so a 12 min ride would cost u : $ 15.45 <==