Quadratic Inequalities

Question 1

Solve x2 – 8x + 15 < 0.Select the critical points for the inequality shown.

Revolt · Accepted Answer

D: 3; E: 5

Question 2

Select the intervals that must be tested.

Revolt · Accepted Answer

B: x < 3; C: 3 < x < 5; E: x > 5

Question 3

The solution set for the quadratic inequality is:

Revolt · Accepted Answer

C:

Question 4

The inequality –x2 – 6 < 0 has .

Revolt · Accepted Answer

A: 0 critical points

Question 5

What is the solution set of –x2 – 6 < 0?

Revolt · Accepted Answer

B:

Question 6

Select all of the ordered pairs that make the inequality y > x2 + 3x – 4 true.

Revolt · Accepted Answer

A: (0, 0); C: (–2, –1)

Question 7

Which graph shows y < x2 + 1?

Revolt · Accepted Answer

C:

Question 8

Mario has a business selling muffins. Let x be the price of a muffin. Then, the profit P for Mario’s business is given byChoose the inequality that shows the business will make a positive profit.

Revolt · Accepted Answer

D:

Question 9

Select all of the other ways that the solution can be represented.

Revolt · Accepted Answer

B: {x | 3 < x < 5}; C:

Question 10

Look at the factorization shown below.0 < –100x2 + 350x – 1500 < –50(2x2 – 7x + 3)0 < –50(2x – 1)(x – 3)Select the range that Mario can choose from to price his muffins and make a positive profit.

Revolt · Accepted Answer

B: $0.50 < x < $3.00

Quadratic Inequalities Answers

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