# Given 2 rectangles. Model the area of each using a quadratic function, then eval

Given 2 rectangles. Model the area of each using a quadratic function, then evaluate each, considering x=8.
(1st) l=2x+4; h=x+3
(2nd) l=3x-9; h=x+2

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dessinemoie
Formula for a rectangle's area:
A=lh
Given:
x=8
Substitute for:
(1st) $$\displaystyle{\left({2}{x}+{4}\right)}{\left({x}+{3}\right)}={20}\times{11}={220}$$
(2nd) $$\displaystyle{\left({3}{x}-{9}\right)}{\left({x}+{2}\right)}={15}\times{10}={150}$$