A construction company is pouring cement for a rectangular sidewalk. The dimensions of the sidewalk. The dimensions of the sidewalk are 3.5 feet by 42 feet. What is the area of the sidewalk A) 98 sq ft

B) 126 sq ft

C) 147 sq ft

D) 294 sq ft

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if y=4x then you will substitute 4x in for y in the second equation.

8x + 4x = 18 combine like terms

12x = 18 divide by 12 on both sides

x = 18/12 or 3/2

now replace x in the first equation with 3/2 to get

y = 4 3/2

y = 6

the answer is a

(3/2,6)

hope that .

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