Saturday

December 20, 2014

December 20, 2014

Posted by **Marie** on Monday, December 16, 2013 at 5:41pm.

1. 5h – 9 = –16 + 6h (1 point)

4

–7

7

10

2. 4x + 4 = 9x – 36 (1 point)

–8

–7

8

–3

3. Which of the following equations has an infinite number of solutions? (1 point)

3x – 3 = –4x

2y + 4 – y = 16

7x + 5 = 4x + 5 + 3x

6y – 2 = 2(y – 1)

4. Graph the inequality: x ≤ –2 (1 point)

number line

number line

number line

number line

5. Write an inequality for the word sentence: k is less than zero. (1 point)

k > 0

k ≥ 0

k < 0

k ≤ 0

Solve the inequality.

6. q – 12 ≥ –13 (1 point)

q ≥ 1

q ≥ –1

q ≥ 25

q ≥ –25

7. 12p < 96 (1 point)

p < 8

p < 108

p < 84

p < –8

8. g/–5 < –18 (1 point)

g < –23

g > –90

g > 90

g < 90

9. The result of 6 subtracted from a number n is at least 2. What numbers are solutions? (1 point)

n – 2 > 6; n > 8

n – 6 ≥ 2; n ≥ 8

n + 6 ≥ 2; n ≤ 4

n + 6 ≥ 2; n ≥ 4

10. You have $59.95 in your wallet and want to buy some new CDs. If the CDs are $11.99 each, what number of CDs, x, can you buy? Write and solve an inequality. (2 points)

- Math! -
**Steve**, Monday, December 16, 2013 at 5:52pm#1

5h – 9 = –16 + 6h

-h = -7

h = 7

#2

4x + 4 = 9x – 36

-5x = -40

x = 8

#3

7x + 5 = 4x + 5 + 3x

7x+5 = 7x+5

true for all x

#4

place a solid dot at x = -2

Shade to the left

#5

k < 0

#6

q – 12 ≥ –13

q >= -1

#7

12p < 96

p < 8

#8

g/–5 < –18

g > 90

#9

n-6 >= 2

n >= 8

#10

11.99x <= 59.95

x <= 5

If you had no clue on solving these, I fear you are not ready for your quiz. Lots of work ahead, babe.

- Math! -
**kuai**, Monday, December 16, 2013 at 5:52pm1) 5h ¨C 9 = ¨C16 + 6h

-9+16 = 6h-5h

7 = h

4x + 4 = 9x ¨C 36

36 +4 = 9x-4x

40 = 5x

8 =x

5) k < 0

6) q ¡Ý ¨C1

7) p < 8

8)g > 90

9)n ¨C 6 ¡Ý 2; n ¡Ý 8

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