Wednesday

July 23, 2014

July 23, 2014

Posted by **michelle** on Wednesday, July 28, 2010 at 3:57pm.

a).

Find a polynomial A(x) that represents the new area.

b).

Find A(2)

c).

If x=2 feet then how much less area does he have than he thought he had?

Answer:

a).

A(x)=(200-x)*(200+x)

A(x)=40,000-x^2

b).

A(2)=40,000-(2)^2

A(2)=40,000-4

A(2)=39,996 feet^2

c).

Initial area= 200*200=40,000 feet^2

Present area A(2)=39,996 feet^2

40,000 – 39,996= 4 feet ^2

I need to know if i done this correctly.

- Algebra -
**Henry**, Wednesday, July 28, 2010 at 5:07pmAll of your answers are correct, and

you did a good job of showing your

work. Good job!!

- Algebra -
**michelle**, Wednesday, July 28, 2010 at 9:35pmThank you so much!

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