Question

can somebody help meThomas 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? (1 point)

a
y = x + 21

b
y = 9x + 21

c
y = 9x + 12

d
y = x + 12

Answer 1

The equation that would best show the relationship between x and y would be C. Breaking down the equation in C would look like this:

y (amount of money need to pay rent) = 9 multiplied by x (amount of days) + 12.

In essence, it's a formula. Plugging in the values on the table into the formula would prove that C is the answer.

For example, I'll use the values on Day 3.
\[y = 9(3)+12\]
This gives you 39, which is indeed the amount of money Thomas needs to pay on Day 3.