Solving Compound Inequalities

What is the range of test scores needed to achieve a B in the algebra course?

• 83 to 87

• 85 to 95

• 80 to 90

• 84 to 86

If you scored 86, 85, and 80 on the first three tests, what is the expression for the average score including the fourth test?

• (86 + 85 + 80 + s) / 2

• (86 + 85 + 80 + s) / 4

• (86 + 85 + 80 + s) / 3

• (86 + 85 + 80 + s) / 5

What is the sum of the first three test scores?

• 260

• 245

• 240

• 251

What operation must be performed to both sides of the inequality to eliminate the division by 4?

• Add 4

• Divide by 4

• Subtract 4

• Multiply by 4

After multiplying by 4, what is the new inequality for the lower bound?

• 336 ≤ s + 251

• 336 = s + 251

• 336 < s + 251

• 336 ≥ s + 251

What is the final range of possible scores for the fourth test?

• 83 to 87

• 84 to 86

• 80 to 90

• 85 to 93

What is the first step in solving the inequality 3t + 2 < -7?

• Subtract 2 from both sides

• Add 2 to both sides

• Divide both sides by 3

• Multiply both sides by 3

What is the solution to the inequality 3t < -9?

• t < 3

• t > -3

• t < -3

• t > 3

What must be done to the inequality symbol when dividing by a negative number?

• Subtract 1 from it

• Keep it the same

• Flip it

• Add 1 to it

What is the correct graph representation for the solution of the 'or' compound inequality?

• Circles on -3 and 1, no shading

• Circles on -3 and 1, shading to the left of -3 and to the right of 1

• Circles on -3 and 1, shading to the right of -3 and to the left of 1

• Circles on -3 and 1, shading between -3 and 1