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Inequalities.

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Presentation on theme: "Inequalities."— Presentation transcript:

1 Inequalities

2 Translate: Eight less than a number is at least 9

3 Translate: Eight less than a number is at least 9 n – 8 > 9

4 Translate: Five more than a number is at most 44

5 Translate: Five more than a number is at most 44 n + 5 < 44

6 Translate: After depositing $30, Amy had more than $300 in her savings account.

7 Translate: After depositing $30, Amy had more than $300 in her savings account. x + 30 > 300

8 Translate: After withdrawing $40, Erin had less than $ 10 in her savings.

9 Translate: After withdrawing $40, Erin had less than $ 10 in her savings. X – 40 < 10

10 Word Problem: Dylan works for “Dog Scoopers.” He charges $20 for each yard he cleans. Write and solve an inequality that can be used to find out how many lawns he must clean in a week to earn at least $ 200.

11 Word Problem: Dylan works for “Dog Scoopers.” He charges $20 for each yard he cleans. Write and solve an inequality that can be used to find out how many lawns he must clean in a week to earn at least $ 200. X= number of lawns cleaned 20x > 200 20 X > Dylan needs to clean at least 10 lawns.

12 Word Problem: Peachey designs planners for $10 a planner. Write and solve an inequality for the number of planners she must design to earn at least $144.

13 Word Problem: Peachey designs planners for $10 a planner. Write and solve an inequality for the number of planners she must design to earn at least $144. X = number of planners designed 10 x > 144 X > Peachey must design at least planners.

14 Solve and Graph: -15 > t – 4

15 Solve and Graph: -15 > t – 4 + 4 + 4 -11 > t t< -11
-11 > t t< -11

16 Solve and Graph: 8p < - 40

17 Solve and Graph: 8p < - 40 p < -5

18 Solve and Graph: x + 8 > 4x

19 Solve and Graph: x + 8 > 4x - x - x 8 > 4 x 4 4 2 > x
2 > x X < 2

20 Solve and Graph: - 4z + 10 < z

21 Solve and Graph: 4z + 10 < -27 + z + 4z + 4z 10 < -27 + 5z
37 < 5z 7.4 < z Z > 7.4

22 Solve and Graph: 4(2 – x) > 18

23 Solve and Graph: 4(2 – x) > 18 8 – 4x > 18 - 8 -8 - 4x > 10
- 4x > 10 x < -2.5

24 Solve and Graph: c 2 + 5 > 8

25 Solve and Graph: c 2 + 5 > 8 - 5 -5 (2) c 2 > 3 ( 2) c > 6
(2) c 2 > 3 ( 2) c > 6


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