Topic 5 Review 7th

The price of nails is $1.29/lb, the price of washers is $0.79/lb, and the price of bolts is $2.39/lb.

Write an expression to represent the total price of n pounds of nails, w pounds of washers, and b pounds of bolts.

The price of nails is $1.29/lb, the price of washers is $0.79/lb, and the price of bolts is $2.39/lb.

What is the total cost of buying 2 pounds of nails, 4 pounds of washers, and 3 pounds of bolts?

During a walkathon, Team A walks a total of 6x + 12 miles and Team B walks a total of 4x – 7 miles. What is the difference in miles walked between the two teams?

• 2x – 5

• 2x + 5

• 2x – 19

• 2x + 19

• 24 + 18e – 3f

• -18e + 3f – 24

• -24 – 18e + 3f

• 8 – 6e – f

• 3(-8 – 6e + f)

Simplify the expression 2(x – 6) + 2(8).

• 2x + 4

• 2x + 2

• x + 4

• x + 2

The manager of a store marks up all items by 10%. If x is the original price, select all the expressions that represent the new price with the markup.

• 0.9x

• x

• 1.1x

• x + 0.1x

• x – 0.1x

There are 10x – 8 customers in a store on Monday and 6x + 16 customers on Tuesday. What is the total number of customers for the two days?

• 4x + 24

• 4x + 8

• 16x + 24

• 16x + 8

The height of the water in a fish pond is 42.5 inches. Water is being drained from the pond at a rate of 3.75 inches per minute. What is the height of the water after 3 minutes?

Select all correct ways of factoring −5x − 15.

• −5(x + 3)

• 5(x + 3)

• 5(−x − 3)

• −5(x − 3)

• 5(x − 3)

Consider the expression 30b − 6c.

Factor the expression using the GCF.