Question

The area of a rectangle is expressed as (12m+18) square feet. If the width of the rectangle is 6 feet, choose an expression to represent the length of the rectangle.
(Hint: If you have area, how would you find length?)
A. (12m+18)feet B. (m+1)feet

C. (2m+3) feet D. (6m+12)feet​

Answer 1

$a = l \times w \\ (12m + 18) = l \times 6 \\ \frac{12m + 18}{6} = l \\ (2 m + 3) = l$

the answer is C.