Three functions are shown below. Function 1: Marco takes the train to work. He buys a $40 train card each month, and
$1.50 is deducted from its value for each day that he takes the train.
Function 2: Isano drives a car to work. The equation E - 3d + 10 represents Isano's
traveling expenses each month, where d is the number of days she drives her car.
Function 3: Paulo rides a bike to work. His expense is the same each day, and his total
expenses for 1 work week are modeled in the table below.
Days
1
Total Expenses, S
0.75
2
1.50
3
2.25
4
3.00
5
3.75
Which function has the greatest rate of change?
The functions have the same rate of change.