He length of a rectangle is represented by the function l(x) = 4x. the width of that same rectangle is represented by the function w(x) = 7x^2 − 4x 2. which of the following shows the area of the rectangle in terms of x?
(l w)(x) = 7x^2 2
(l w)(x) = 7x^2 − 8x 2
(l ⋅ w)(x) = 28x^3 − 16x^2 8x
(l ⋅ w)(x) = 28x^3 − 4x 2