The perimeter of the rectangle below is 76 units. Find the length of side QR. Write your answer without variables.

Answer:
Step-by-step explanation:
Perimeter Formula
2*2y +2(3y + 3) = 76 Remove the brackets
4y + 6y + 6 = 76 Combine
10y + 6 = 76 Subtract 6 from both sides
10y +6-6 = 76-6 Combine
10y = 70 Divide by 10
10y/10 = 70/10
y = 7
QR = 3y + 3 It's a rectangle. Opposite sides are equal.
QR = 3*10 + 3
QR = 30 + 3
QR = 33