Answer:
10x+y
Step-by-step explanation:
She should use square feet. always use square feet when calculating area.
Answer:
sorry i need points
Step-by-step explanation:
you nub lol
Answer:
10 inches
Step-by-step explanation:
6x-2+6x-2+3x+1=42
12x-4+3x+1=42
15x-3=42
15x=45
x=3
Plug x=3 into 3x+1
3*3+1
9+1=10
Length of base is 10 inches