Work the application. Write a legend and an equation. Solve the equation and answer in a complete sentence.The area of a rectangular piece of plywood is 45 square inches and the width is 9 inches. Find the length.
A. Let x = the length of the rectangular piece of plywood.
9 ? x = 45
The length of the rectangular piece of plywood is 4 inches.
B. Let x = the length of the rectangular piece of plywood.
x ? 9 = 45
The length of the rectangular piece of plywood is 5 inches.
C. Let x = the length of the rectangular piece of plywood.
45 - 9 = x
The length of the rectangular piece of plywood is 36 inches.
D. Let x = the length of the rectangular piece of plywood.
9 + 9 + x + x = 45
The length of the rectangular piece of plywood is 8 inches.
Answer: B
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where 
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