kianakilbourn8
05.03.2021 •
Mathematics
WILL MARK BRAINLEST
Karen is adding a border to a rectangular poster. The border will have a uniform width of x inches and run along all four sides, so Karen uses the functions l and w to model the length and width, in inches, of her poster after she adds the border.
l(x) = 2x + 18
w(x) = 2x + 24
Which function correctly represents the total area, in square inches, of Karen’s poster, when a border x inches wide is included in the area?
A. A(x) = 4x2 + 42x + 432
B. A(x) = 4x + 432
C. A(x) = 4x2 + 84x + 432
D. A(x) = 4x2 + 432
Solved
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Ответ:
C
Step-by-step explanation:
(2x + 18)(2x + 24) = Total area = A(x)
A(x) =
Ответ: