Chapter 7 Expressions Test

An online store sells specialty bags. They charge $8 for shipping and $21 per bag ordered. Write an expression that can be used to find the cost in dollars for b bags including shipping.

Andrew owns 3 fewer DVDs than Paul. Let k represent the number of Paul's DVDs. Identify the expression that can be used to find the number of DVDs that Andrew owns.

• k – 3

• 3 – 2k

• 2k – 3

• 3k – 3

Darryl is buying apples and bananas. He bought a pounds of apples that cost $2 per pound and b pounds of bananas that cost $1 per pound. The total amount of his purchase is given by the expression 2a + b. Select the terms of the expression. Mark all that apply.

• 2a

• 2

• a

• b

• 1b

Emir is ordering sets of guitar strings and bags of picks for his guitar. A new set of strings costs $12 and a new bag of picks cost $4. Shipping costs $6. The expression 12g + 4g + 6 gives the total cost for buying g sets of strings and picks. Simplify the expression by combining like terms.

Erika writes the following word expression on the board: the quotient of 24 and k. Write an algebraic expression for the word expression. Then, evaluate the expression for k = 3. Show your work.

Shen has some bags that each contain 24 balloons. She takes 2 balloons from each bag. The expression 24b - 2b represents the number of balloons b left in the bags. Simplify the expression by combining like terms. Draw a line to match the expression with the simplified expression.

• 26b

• 22b

• 18b

• 12b

Olivia delivers packages. She earns $300 per week plus $6 for each package she delivers. The expression 300 + 6p gives the amount in dollars that Olivia earns for delivering p packages. How much will Olivia earn if she delivers 55 packages in one week? Show your work.