katherine spent a total of $18 bowling one afternoon. She rented a pair of bowling shoes for $5 and bowled 4 games. Each game of bowling costs the same amount. Write and solve an equation to find x, the cost, in dollars of each game of bowling.

She already paid $5, and then she bowled 4 games so 4x represents the four games she bowled and how much she payed for them. The total cost was 18.

5 + 4x = 18

Subtract 5 from both sides:

4x = 13

Divide both sides by 4

x = 3.25

So she paid $3.25 per game

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart