linda has a rectangular garden that is 3x - 5 feet by 2x + 8 feet she wants to put a fence around the perimeter of the garden what is the perimeter?
a. 10x + 6
b. 10x - 6
c. 5x + 13
d. 5x - 13
a. 10x + 6
b. 10x - 6
c. 5x + 13
d. 5x - 13
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Answer: a. 10x + 6
Solution:
Length (l) = 3x - 5
Width (w) = 2x + 8
P = ?
P = 2l + 2w
P = 2(3x - 5) + 2(2x + 8)
P = 6x - 10 + 4x + 16
P = 10x + 6