Question

Which expression shows the area of the these three rectangles?a. 3+(6•2+x)b. 3•(6•2+x)c. 3+(6•(2+x))d. 3•(6•(2+x))

Answer 1

Lets suppose that the there are three rectangles with the measures given on the picture. Then, the area of one rectangle is:

$\begin{gathered} A=b\cdot h \\ \Rightarrow A=6\cdot(2+x) \end{gathered}$

then, the area of three triangles is:

$3\cdot A=3\cdot(6\cdot(2+x))$