work. Do not solve.
-5x + 9y = -12
-4x - 4y = -32
A) Substitution B) Addition
Answer: B
Write the word or phrase that best completes each statement or answers the question.
-Bob fenced in a rectangular garden in his yard. The length of the rectangle is 4 feet longer than the width and the perimeter is 52 feet. What is the width of the rectangle?
A) 22 feet
B) 13 feet
C) 10 feet
D) 11 feet

Question

Quizplus · Accepted Answer

Let x be the width of the rectangle. Then, the length is x+4.
The equation for perimeter is:
P = 2(width + length)
Substitute the given information:
52 = 2(x + x+4)
52 = 2(2x+4)
26 = 2x+4
22 = 2x
x = 11
Therefore, the width of the rectangle is 11 feet.

Work. Do Not Solve