Answer:
the unanswered side is 3
Step-by-step explanation:
5^2(25)-4^2(16)=9
9=3^2
You take the x and change it to the other side to leave y by itself and then divide by 2 = Y=-3-x
Ok....we need lowest common multiple of 0.40, 0.50, 0.80...and that is gonna be : 4.00......so the customer spends $ 4.00