Solve the problem.
-The length of a rectangular frame is $3 \mathrm{~cm}$ more than the width. The area inside the frame is 40 square $\mathrm{cm}$. Find the width of the frame.
A) $6 \mathrm{~cm}$
B) $8 \mathrm{~cm}$
C) $11 \mathrm{~cm}$
D) $5 \mathrm{~cm}$

Question

Quizplus · Accepted Answer

Let the width be $x$ cm. Then the length is $x + 3$ cm. The area is given by $x(x + 3) = 40$. Solving $x^2 + 3x - 40 = 0$ gives $x = 5$ cm.

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