Answer:
117 feet squared
Step-by-step explanation:
Multiply the height (9 feet) by the width (13 feet).
9 x 13 = 117
117 feet squared
Note: squared is added when describing area (it's used as an exponent in numbers)
Answer:
15cd(1 + 2cd)
Step-by-step explanation:
greatest common factor is 15cd

Answer:
x = 80
Step-by-step explanation:
x + 30 = 110 (Opposite angles are equal)
x = 110 - 30
x = 80