Question

The cost, y, of taking a rideshare per hour, x, is shown in the table.

Cost of Rideshare per Hour
time (hours) 8 9 10 11 12
cost ($)
22.24 25.02 27.80 30.58 33.36
What type of function could be used to model the cost, y, of a rideshare as a function of time, x?

(1 point)

quadratic function

exponential growth function

linear function

exponential decay function

Answer 1

Linear function.

The differences between successive costs are constant: 25.02−22.24 = 27.80−25.02 = 2.78, etc., so the rate of change is constant. The model is y = 2.78x (linear).