SOLUTION: A rectangular painting is m+4 inches wide and 3m-1 inches long. What is the area, in square inches, of the painting in terms of m?
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Question 1063621: A rectangular painting is m+4 inches wide and 3m-1 inches long. What is the area, in square inches, of the painting in terms of m?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
We'll use the formula
area = (length)*(width)
which is the area of a rectangle formula. We're given
length = m+4
width = 3m-1
So let's plug those values in to get...
area = (length)*(width)
area = (m+4)*(3m-1)
area = m*(3m-1)+4*(3m-1)
area = m*(3m)+m(-1)+4*(3m)+4(-1)
area = 3m^2-m+12m-4
area = 3m^2+11m-4
Note: the units of the area are in "square inches" (inch * inch = square inches)
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