I think it’s C. 136 ft squared
21/7=3mins per wall with 5 people.
Because we assume that all of the people paint at the same rate, 3 X 5=15 mins for one person working alone.
15/3=5 mins per wall with 3 people X 10 people= 50 mins for 3 people to paint 10 walls.
The answer is 50 mins.
The answer is 36 , 49 , & 64 .
<span> A line that never changes, so you can choose whatever two points you want and you will always get the same slope.
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