What is the area of this composite figure?

A. 12ft^2
B. 80ft^2
C. 88ft^2
D. 100ft^2

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8