Tony and Ricky spend a certain amount of money from their accounts each week at a pet shelter.
The table shows the relationship between the amount of money (y) remaining in Tony's account and the number of weeks (x):
Function 1:
Number of Weeks
(x) Amount Remaining (dollars)
(y)
1 30
2 24
3 18
4 12
The equation shows the relationship between the amount of money, y, remaining in Ricky's account and the number of weeks, x:
Function 2:
y = −7x + 30
Which statement states and explains which function shows a greater rate of change?
a. Function 1, because Tony spends $6 each week and Ricky spends −$7 each week
b. Function 2, because Ricky spends $7 each week and Tony spends $6 each week
c. Function 1, because Tony spends $18 each week and Ricky spends $23 each week
d. Function 2, because Ricky spends $30 each week and Tony spends $18 each week