The area (in square feet) of the school sign can be represented by 15.02 – - 2
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WESTFIELD
MIDDLE SCHOOL
(3x + 1)
Homs of a tonga
a. Write an expression that represents the length of the sign.
length:
ft
b. Describe two ways to find the area of the sign when x = 3.
1. Substitute
for
into the expression for the area 15x2 – 2 – 2, then simplify.
2. Substitute
for
into the expressions for the length
and width (3x + 1), simplify each, then
multiply these two numbers.
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