Question

The area (in square feet) of the school sign can be represented by 15.02 - 2 Welcome to WESTFIELD MIDDLE SCHOOL (3x + 1).

a. Write an expression that represents the length of the sign.

A. 3x + 1
B. 15.02 - 2
C. 3x + 1 - 15.02 + 2
D. 3x + 1 + 15.02 - 2

b. Describe two ways to find the area of the sign when x = 3.

Substitute x = 3 into the expression for the area 15.02 - 2 - (3x + 1), then simplify.
Substitute x = 3 into the expressions for the length and width (3x + 1), simplify each, then multiply these two numbers.

Answer 1

The length of the school sign is represented by the expression '3x + 1'. To find the area when x = 3, substitute x directly into the area expression or calculate the length and width first, then use the area formula.

Step-by-step explanation:

The expression that represents the length of the school sign is A. 3x + 1. When calculating the area of the sign given the expression 15.02 - 2(3x + 1), we can follow two different methods after substituting x = 3. First, we substitute x directly into the provided area expression, simplify, and obtain the area in square feet. The second method involves finding the dimensions of the sign first by substituting x = 3 into the length expression, simplifying it, and then using the area formula to determine the total square footage.