a) y + 4x = 14
To find the cost of the shoe rental (represented as y), we plug in the number of games and isolate the y:
y + 4x = 14 We plug in 3 for x because they bowled 3 games:
y + 4(3) = 14 Then, multiply:
y + 12 = 14 Subtract 12 on each side to isolate the y:
y = 2
b) So, the cost of shoe rentals is $2.