Answer:
C
Step-by-step explanation:
For a you need to do (10 times 13) plus (10 times 7) because there's two boxes one is shaded.
For b you need to do (7.5 times 20) plus (2.5 times 20)
Answer:
240 inches squared
Step-by-step explanation:

Answer:
86 - 3x
Step-by-step explanation:
1- Calculate