IA3 Book 2 Review (2024)

It costs $200 to rent a banquet hall for a celebration, plus $8 per person for a buffet and $5 per person for party favors. The expression below represents the total cost of a celebration for n people.

200 + 8n + 5n

Evaluate the expression for a celebration with 25 people.

• $225

• $325

• $425

• $525

Answer explanation

To evaluate the expression for 25 people, substitute n with 25 in the expression: 200 + 8(25) + 5(25) = 200 + 200 + 125 = $525. Therefore, the correct answer is $525.

At a music festival, 30% of the bands are rock bands. If there are 50 bands performing at the festival, how many are rock bands?

• 10

• 15

• 20

• 25

Answer explanation

30% of 50 can be calculated using...

0.30 x 50

In a town election, 25% of the voters supported a proposal for a new park. If there were 200 voters in total, how many voters were in favor of the park proposal?

• 40

• 50

• 60

• 70

Answer explanation

25% of 200 can be calculated using: 0.25 x 200

Sara subscribes to an online streaming service that costs $8.50 per month. Which equation can be used to determine the total cost, c, that Sara pays for any number of months, m.

• c = 8.50 x m

• m = 8.50 x c

• c = 8.50 + m

• m = 8.50 + c

Answer explanation

Per = Multiply

A bakery sells a dozen cookies for $6.00. What is the unit cost of each cookie in the dozen?

(Hint: a dozen = 12)

• $0.40

• $0.50

• $0.60

• $1.00

Answer explanation

To find the unit cost of each cookie, divide the total cost of a dozen ($6.00) by the number of cookies in a dozen (12), which equals $0.50 per cookie. 6/12 = 1/2 = 0.50

Mr. Rodriguez purchased 3 pounds of apples for $8.40. At this price, how much will 5 pounds of apples cost?

• $5.60

• $12.00

• $14.00

• $21.00

Answer explanation

Set up a proportion and cross multiply!

Mrs. Thompson orders dinner to be delivered to her home for herself and some family members. The cost of each dinner is $9.50. There is also a one-time delivery fee of $5.75 to deliver the dinners. What is the total cost of delivering 3 dinners?

A sporting goods store charges $30 for 12 cans of tennis balls and $45 for two boxes of

golf balls. A coach orders 100 cans of tennis balls and 5 boxes of golf balls. How much

will the coach pay for the tennis and golf balls?

Linda bought 4 notebooks for $12. If the price per notebook remains the same, how much will 7 notebooks cost?

• $18

• $21

• $24

• $28

If 40% of a class of 30 students are girls, how many boys are in the class?

• 12

• 15

• 18

• 20