Explanation:
A rectangle has a length of (5x - 2) feet and a width of (4x + 7) feet. Write and simplify a linear expression for the perimeter.
when:
L = (5x - 2)
W = (4x + 7)
P = 2L + 2W
P = 2(5x - 2) + 2(4x + 7)
P = 10x - 4 + 8x + 14
P = 18x - 4 + 14
P = 18x + 10