Unit Test — Cumulative exam Answers

Which expressions are equivalent to ? Select three options.

Nancy created a graph to predict the pay she will take home after taxes are taken from her income. Using the information on the graph, what is the constant of proportionality?

Zenaida is shopping and wants to purchase a $320 stereo system. The store is offering an incentive of 10 to 30 percent off when you spin the discount wheel. Zenaida spins the wheel and receives 20 percent off. How much will the stereo system cost?

This graph shows a proportional relationship between the number of tulips and the number of daffodils in gardens planned by the Lindy Landscaping Company.Lindy Landscaping GardensWhat is the constant of proportionality?

Isabella’s mom takes her and two other friends mini-golfing. The table below shows how much different things cost at the mini-golf park.Price SheetItemCostAdult Game$7.00Child Game$3.50Pirate Hat$17.2510 Arcade Tokens$4.00Isabella’s mom purchases 1 adult game, 6 child games, a pirate hat, and 30 arcade tokens. She has a coupon for off the total bill. How much did Isabella’s mom spend at the mini-golf park?

Merrida wrote the table of points below. xy2238416Which explains whether or not Merrida has described a proportional relationship, and why?

Maggie bought a pound of bananas and 4 boxes of cereal for $10.11. If each box of cereal cost $2.40, what was the price of a pound of bananas?

Which expression is equivalent to ?

Kendra bought a gallon of milk and of a pound of oranges. If the gallon of milk cost $3.60 and she spent a total of $4.35, which equation can be used to determine x, the cost of a pound of oranges?

Ivan finished of his math homework problems and all 3 problems for his science homework before dinner. If he finished a total of 43 problems before dinner, what is the total number of math homework problems he was assigned?

Which expression is equivalent to ?

Which expressions are equivalent to the given expression? Select two options. (–2.4a – 1.8b) – (–3.8a – 4.4b) + (2.0a + 3.0b)

Jillian is trying to determine what helium tank pressure she needs to fill balloons for the student council dance. Find the unknown numbers in the table until you find the best answer to the question. Which cylinder pressure will Jillian need if she plans to fill 90 balloons?Tank Pressure and Balloon QuantityPressure in the helium cylinder (psi)Number of 9-inch balloons10030150?200?250?300?

The new number, 550, is 200 more than the original number. What is the approximate percent change?

Sales tax in Birmingham, AL, is the highest in the nation at 10 percent. Pete paid $9.44 in sales tax for an item in Birmingham, AL.PercentsTotal10%10%10%10%10%10%10%10%10%10%100%$9.44$9.44$9.44$9.44$9.44$9.44$9.44$9.44$9.44$9.44 What was the price of the item before tax was included?

Troy has a price chart below for various ingredients he needs to order for his sandwich bar.Sandwich IngredientsItemCost (per pound)Onions$0.79Tomatoes$0.93Cheese$1.85Ham$3.15Turkey$3.40Troy has to order 8 pounds of ham, 15 pounds of cheese, and 12 pounds of turkey. What is the total cost of Troy’s order?

One teaspoon equals 0.5 centiliters. How many liters equal 50 teaspoons? Round the answer to the nearest hundredth.

Brian can type pages every 20 minutes. How many pages can he type in 2.5 hours?

What is written in expanded form?