Week 5 Pre Test (7.11A Inequalities)

-4x + 14 ≤ 54

• x ≥ - 10
• x ≤ -10
• x ≥ 10
• x ≤ 10

• x > 3

• x ≤ ⅕

• x ≥ 3

• x ≤ ⅕

Alejandra has $600 in her checking account. She wants to spend part of this money on a computer. She wants to have at least $250 left in her checking account after buying the computer. The inequality shown can be used to find t, the amount of money in dollars that Alejandra can spend on the computer.

t + 250 ≤ 600

Which inequality represents all possible values of t?

• t > 350

• t < 850

• t < 350

• t > 850

Which of the following could be the number of lion cubs at the city zoo given this inequality?

9 + x > 21

• 10 and 12

• 12, 21, and 25

• 13, 21, and 25

• 12,13,21, and 25

What inequality does the number line graph represent?

• x > 5
• x < −5
• x ≥ 5
• x ≥ −5

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

• ≤, ≥ 
• <, >
• ≤, <
• ≥, >

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

• <, >
• ≤, ≥ 
• ≤, <
• ≥, >

Greens are positive, reds are negative. Solve for x

• x<7

• x>7

• x<14

• x<4

12  _____  21

• >
• <
• =

45 is greater than 21, which symbol would you use?

• >

• <