Which of the following represents the area of a rectangle whose length is 5x - 3 and whose width is

x + 7?

a. 5x2 - 21
b. 5x2 + 9x - 21
c. 5x2 + 32x - 21
d. 5x2 - 32x - 21

Question

Which of the following represents the area of a rectangle whose length is 5x - 3 and whose width is

x + 7? 

a. 5x2 - 21
b. 5x2 + 9x - 21
c. 5x2 + 32x - 21
d. 5x2 - 32x - 21

jlg030597 · Answer

Im saying C

jlg030597 · Answer

thats my guess cause im having a hard time concepting this stuff

hero · Answer

$$A_{\text{rect}} = ab$$

Let a = 5x - 3 and b = x + 7

Then 

$$A_{\text{rect}} = (5x - 3)(x + 7)$$

Multiply

anonymous · Answer

(5x-3)(x+7)
5x^2+35x-3x-21
5x^2+32x-21

hero · Answer

@jlg030597, this is not yahoo answers and you shouldn't help users with "guessing"

jlg030597 · Answer

Ok sorry

hero · Answer

If any of what I say surprises you, I advise that you review the code of conduct: http://openstudy.com/code-of-conduct

anonymous · Answer

5x^2+32x−21

anonymous · Answer

so c

anonymous · Answer

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