Question 54 Answer and Explanation _ACT December 2015 Form 72E Math Section

Question 54 Answer and Explanation _ACT December 2015 Form 72E Math Section

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54. The dimensions shown below are in feet. What is the area, in square feet, of the shaded rectangle?

F. ${2x}^{2}$

G. ${2x}^{2}-48x+216$

H. ${2x}^{2}-42x+216$

J. $216-{2x}^{2}$

K. $216-3x$

Answer and Explanation

Your Answer is

Correct Answer is H

Explanation

S=( 12-x )( 18-2x )=2x²-42x+216