Question

Thomas wants to rent a lawn mower. He has to pay a fixed base cost plus a daily rate for renting the lawn mower. The table shows the amount of money, y, in dollars, that Thomas has to pay for renting the lawn mower for x days:

Lawn Mower Rental



Number of days
(x)

Rent (dollars)
(y)

0 12
1 21
2 30
3 39
4 48


Which equation best shows the relationship between x and y?
y = x + 21 y = 9x + 21 y = 9x + 12 y = x + 12