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Sagot :

Anonymous7927idn

Answer:

1. 3x ≤ 9

Divide both sides by 3.

x ≤ 3

Solution Set: x = 3,2,1,...,-∞

In the graph, draw a line from +3 going to the left until the end of the -x line (-10).

2. -c/4 ≤ -2

Multiply both sides to -4 and change the inequality sign.

(-4)-c/4 ≥ -2(-4)

Multiply.

c ≥ 8

Solution set: c = 8,9,10,...,∞

In the graph, draw a line from +8 going to the right until the end of the +x line (+10).

3. 7n + 2 > 51

Subtract both sides by 2.

7n + 2 - 2 > 51 - 2

7n > 49

Divide both sides by 7.

n > 7

Solution set: n = 8,9,10,...,∞

In the graph, draw a line from +8 going to the right until the end of the +x line (+10).

4. 9t + 18 < -27

Subtract both sides by 18.

9t + 18 - 18 < -27-18

9t < 45

Divide both sides by 9.

t < 5

Solution Set : t = 4,3,2,...,-∞

In the graph, draw a line from +4 going to the left until the end of the -x line (-10).

Hope this helps. ^^

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