Question

Which of the following represents the area of a rectangle whose length is 3x – 7 and whose width is x + 2?

A. 3x^2 – 14

B. 3x^2 + x – 14

C. 3x^2 – x – 14

D. 3x^2 + 14

Answer 1

A = L x W
So, (3x-7)(x+2) =

Answer 2

3X-14

Answer 3

3X^2-14

Answer 4

Missing a term....do you know FOIL?

Answer 5

First 3x * x = 3x^2
Outer 3x * 2 = 6x
Inner -7 * x = -7x
Last -7 * 2 = 14

Add all those terms, you get
3x^2 (-7x +6x) +14
3x^2 -x +14

Answer 6

that isn't 1 of the choices

Answer 7

Damn...sorry...my sign was wrong in Last...should have been -14....

Answer 8

I hope you see at least how I got there using the FOIL method

Answer 9

so it's 3x^2 -x -14?

Answer 10

yes