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December 18, 2014

December 18, 2014

Posted by **christine** on Monday, August 15, 2011 at 1:43pm.

-3(-9) – |-5 – 3

3. Simplify. Please show all of your work

9c^3+7c-(3c^3-12+c)

4. Solve 4x- 3(5x-8) =23-9(x+2) . Please show all of your work

5. Solve the following equation for z. Please show all of your work.

x=1/25(22z-9w)

6. Solve -14x -7(4-7) <(2x-15) . Write your solution using set builder notation. Please show all of your work

7.

Solve. Please show all of your work.

During one year, the Hills' real estate bill included $413 for miscellaneous services. Of this amount, 8% went to the local homeless shelter. How much money did the homeless shelter receive?

8. Solve. Please show all of your work.

Find the length and width of a rectangular lot with a perimeter of 108 meters if the length is 8 meters more than the width.

9. 9. Solve. Please show the algebraic inequality you used and show all of your work.

The Lido Company rents copy machines for a monthly charge of $300 + 10 cents per copy. The Lumsden Company rents copy machines for a monthly charge of $500 + 3 cents per copy. How many copies make the Lido Company more expensive than the Lumsden Company?

- math -
**Ms. Sue**, Monday, August 15, 2011 at 1:47pmJiskha is NOT a dumping ground for homework. We help students, but we do not do the work for them. If you continue posting a lot of questions with no work shown, you may be banned from posting here.

Also see Writeacher's message to you earlier today.

http://www.jiskha.com/display.cgi?id=1313421001

- math -
**Henry**, Monday, August 15, 2011 at 6:29pm2. I'm assuming you meant:

-3(-9) - [-5-3] =

27 - 8 = 19.

3. 9c^3 + 7c -(3c^3-12+c) =

9c^3 + 7c - 3c^3 + 12 - c =

6c^3 + 6c + 12 =

6(c^3 + c + 2).

4. Similar to # 3.

5. x = 1/25(22x - 9w) =

Multiply both sides by 25:

25x = 22x - 9w,

25x - 22x = 9w,

3x = 9w,

X = 3w.

6. -14x - 7(4-7) < (2x-15)

-14x + 21 < 2x-15

-14x - 2x < -15 - 21,

-16x < -36,

X > -36/-16,

X > 2 1/4.

- math -
**Henry**, Monday, August 15, 2011 at 10:33pm7. 0.08 * $413 = $33.04

8. Width = X-Met3rs.

Length = (x+8) Meters.

2x + 2(x+8) = 108m.

2x + 2x + 16 = 108,

4x = 108 - 16 = 92,

X = 23m = Width.

X+ 8 = 31m = Length.

9. 0.1x + 300 > 0.03x + 500,

0.1x - 0.03x > 500 - 300,

0.07x > 200,

X > 2857 Copies.

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