Answer
Fill the blanks with:
$ x+5$, $4x+10$
$ x^{2}+5x $
Work Step by Step
The length of a rectangle is 5 feet more than $ x $ = $ x+5.$
The perimeter equals 2$\times $(width + length) $=2(x+x+5)$
$=2(2x+5)=4x+10$
The area equals width $\times $ length = $ x(x+5)=x^{2}+5x $
