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


Tent Rental


Number of days

(x) Rent (dollars)

(y)

0 3

1 8

2 13

3 18

4 23



Which equation best shows the relationship between x and y?