Inequality

Ian needs to save at least $85.00 for a new pair of basketball shoes. He has $25.00 in his piggy bank, and can save $12.00 from his allowance each week. Which inequality represents how many weeks will Ian need to save to earn at least $85.00?

• 25w +12 > 85

• 25 +12w > 85

• 25 +12w < 85

• 25w + 12w < 85

Antonio is going to the carnival. He can spend no more than $20.00. If the ticket to get in is $7.50, and each ride costs $1.25, how many rides could Antonio ride at the carnival? (Set up the inequality, then solve).

• r < 10

• r < 10

• r < 2.5

• r > 2.5

Does the sign need to flip when solving?

-2x ≥ 22

• YES

• NO

Which inequality matches the graph?

• 5x - 2 < 18

• -5x - 2 < 18

• 5x + 2 < -22

• -5x + 2 < -22

Solve and graph the inequality.
^(x+8)/₇ > 2

• A

• B

• C

• D

What inequality does the number line graph represent?

• x≥ 3

• x > 3

• x < -3

• x ≤ 3

When do we switch the inequality symbol?

• when multiplying or dividing by a NEGATIVE

• when adding and subtracting a NEGATIVE

• we never switch the inequality

• When there is a negative in the problem

Solve the Inequality:

m - 10 < 30

• m = 40

• m < 40

• m = 20

• m < 20

When graphing an inequality, you use an open dot when you use which symbol?

• <, >

• ≤, ≥ 

When you graph an inequality, you use a closed dot when you use which symbols?

• ≤, ≥ 

• <, >

• ≤, <

• ≥, >