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The area A, in square centimeters, of a rectangular cutting board can be represented by the expression w(w +9), where w is the width, in centimeters, of the cutting board. Which expression represents the length, in centimeters, of the cutting board? w(w +9)
Correct answer: D (parsed from the explanation — this source omits an answer key for this item)
Explanation
+ Choice D is correct. It’s given that the expression w^w 9h represents the area, in square centimeters, of a rectangular cutting board, where w is the width, in centimeters, of the cutting board. The area of a rectangle can be calculated by multiplying its length by its width. It follows that the length, in centimeters, of the + cutting board is represented by the expression ^w 9h. 35 SAT PRACTICE TEST #8 ANSWER EXPLANATIONS SAT ANSWER EXPLANATIONS n MATH: MODULE 1 Choice A is incorrect. This expression represents the area, in square centimeters, of the cutting board, not its length, in centimeters. Choice B is incorrect. This expression represents the width, in centimeters, of the cutting board, not its length. Choice C is incorrect. This is the difference between the length, in centimeters, and the width, in centimeters, of the cutting board, not its length, in centimeters.
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