math
posted by lea .
A rectangle has a length of 4x and a width of 4x2. Its perimeter is 12 inches. Find the length and width. Write the equations. What is the length and width?

2(4x) + 2(4x2) = 12
8x + 8x  4 = 16
16x = 16
x = 1
one side is 4, the other is 2