Question

A rectangle has a width of (7m - 1) and a length of (5m + 5). Which expression represents the area of the rectangle?

Answer 1

35 m^2 + 30 m - 5

Explanation:

The area of a rectangle can be found by

A = l*w

= (7m-1) ( 5m+5)

FOILing

= (7m*5m) + 7m*5 + -1*5m -5

= 35m^2 +35m -5m -5

= 35 m^2 + 30 m - 5