The length of a rectangle is 3x+7 .the width is x-4 . express the area of the rectangle in terms of the variable x. a) 3x^2 -5x-28 b) 3x^2 +5x +28 c) 2x^2 +4 x-28 d ) 3x^2 -5x +28

A) 3x²-5x-28. The area of the rectangle  with length 3x+7 and width x-4 can be represented as 3x²-5x-28.

The equation to find the area of the rectangle is simply A = l * w. This means that the area of a rectangle is equal to the product of its length (l) by its width (w), or of its length by its width.

A = w*l

A = (3x + 7)(x -4) = (3x)(x) + (3x)(-4) + (7)(x) + (7)(-4)

A = 3x² - 12x + 7x - 28

A = 3x² -5x - 28

i believe the answer to be 48

step-by-step explanation:

step-by-step explanation:

ok one would be money, and the other would be refreshments or something similar. if each bag of popcorn is 5.00 and each drink is half of that that means drinks are 2.50 the proper way to do that would to look and see how much of each you can buy without exceeding a limit of 30.00