Chapter 7 Retake

Multiple Choice

When multiplying or dividing by a negative number, we always flip the directions of the inequality symbol.

• True

• False

Math Response

Solve:

$$5+-4x<33$$

Type answer here

Correct Answer: x>-7

Deg^°

Rad

Math Response

Solve:

$$-6x+5>-7$$

Type answer here

Correct Answer: x<2

Deg^°

Rad

Multiple Choice

Which graph represents the solution to the previous inequality, t < 2?

Multiple Choice

Use the video as a guide to help you solve the following problem:

Jennifer has already earned $45 mowing lawns. She earns $15 per lawn. She needs at least $125 for a new string trimmer. Write and solve an inequality to determine how many more lawns she will need to mow to have at least $125.

• She will need to mow at least 6 more lawns.

• She will need to mow no more than 6 more lawns.

• She will need to mow at least 5 more lawns.

• She will need to mow no more than 5 more lawns.

Multiple Choice

Use the video to help guide you in solving the following problem:

Jamie goes tot he grocery store to buy chicken and a bag of frozen green beans. The store sells chicken for $4 per pound and a bag of green beans for $2. Jamie want to spend less than $22 at the store and creates the inequality given to determine how many pounds of chicken, x, he can buy.

$$4x+2<22$$

Which graph shows all the possible amounts of chicken he can buy?

Multiple Choice

Use the video to help guide you in solving the following problem:

Each student in Ms. Thompson's class is decorating a t-shirt for a school program. There are 25 students in Ms. Thompson's class. She already has 3 shirts. She will buy shirts in packages of 6 and she cannot buy part of a package.

What is the minimum number of whole packages of shirts Ms. Thompson needs to buy?

• 2

• 3

• 4

• 5

Multiple Choice

Use the video to help guide you in solving the following problem:

As a salesperson, you are paid $50 every week plus $3 per sale. This week you want to make at least $100. Write and solve an inequality for the number of sales you need to make and describe the solution.

• $$3x+50\ge100$$
  $$x\ge16\frac{2}{3}$$

  I must make 17 or more sales.

• $$3x+50\le100$$

  $$x\le16\frac{2}{3}$$

  I must make 16 or fewer sales.

• $$3x+50>100$$

  $$x>16\frac{2}{3}$$

  I must make more than 17 sales.

• $$3x+50<100$$

  $$x<16\frac{2}{3}$$

  I must make less than 16 sales.

Multiple Choice

Jimmy performs at a fair. He earns $100 plus $3 for every ticket sold. He wants to earn more than $450. Which inequality can be used to find the number of tickets, t, that need to be sold for Jimmy to earn more than $450?

• $$\frac{1}{3}t+100>450$$

• $$\frac{1}{3}t+450>100$$

• $$3t+100>450$$

• $$3t+450>100$$

Multiple Choice

You have a $100 gift card to Giant Eagle. You have $85 worth of groceries in your cart. Bottles of Gatorade cost $2.29 each. Which inequality represents the maximum number of bottles of Gatorade, g, you can purchase using your gift card?

• $$2.29g+85\ge100$$

• $$2.29g+85\le100$$

• $$85g+2.29\ge100$$

• $$85g+2.29\le100$$