Cumulative Exam — Cumulative exam Answers

Julio predicted that the average high temperature for January would be . The actual average high temperature was 4 degrees higher than Julio’s prediction. Which describes the actual average high temperature for January?

Thirty cars pass through a certain toll booth each minute. At that rate, how many cars are expected to pass through the toll booth each half-hour?

A clothing shop is offering a 12 percent discount for senior citizens. Which equation represents the discount price?

The hexagon below has been reduced by a scale factor of . What is the area of the reduced hexagon?

All the items on the sale rack were 75 percent off their original price. PercentsTotal75%25%100%25%25%25%25% x If Jill bought an item on the sale rack and saved a total of $84, what is the value of x in the table above?

The price of a gallon of gasoline dropped by $0.08 on Wednesday and by a quarter (0.25) of that amount on Thursday. Which best represents how the price of a gallon of gasoline changed on Thursday?

A car travels 18 miles per gallon of gas used. Which equation best represents the proportional relationship between the y miles that the car has traveled and the x gallons of gasoline that it has used?

Giovanna used the calculations below to determine the height of a stack of 7 books that are each inches thick. What was her error?

What is the value of the expression below?

What is the quotient?

Talia gave her hairdresser a 20 percent tip, which amounted to $7. PercentsTotal 100% What was the price of the service before the tip?

The pentagon below has been reduced by a scale of 0.5. What is the area of the reduced pentagon?

Forty percent of the sheets of construction paper are secondary colors. There are 25 sheets of construction paper. How many of those sheets are secondary colors?Secondary-Color Construction Paper10%10%10%10%10%10%10%10%10%10%

Marge orders the following items and would like to leave a 20 percent tip based on her bill. There is no tax on her meal. What is the total cost of her dinner including gratuity?Item AmountSoup$3.75Shrimp scampi$15.00 Iced tea$2.60Dessert$4.25

Nancy spent $44.59 on 5.25 quarts of olive oil. What is the cost of one quart of olive oil? Round to the nearest cent.

Bryson hopes to win a three-day vacation in a drawing that is being held at his office. He purchased 40 raffle tickets. There were 500 raffle tickets sold. What is the theoretical probability of Bryson winning the trip?

Use the diagram to solve. What is 135% of 280?PercentTotal100%5%5%5%5%5%5%5%135%

Isaiah has $20 to spend on bowling. He has four bowling alleys to choose from, and the price each charges for a game is shown in the table.Prices at Four Bowling AlleysBowling AlleyPrice per GameA$4.25B$5.25C$3.75D$3.50Which can he afford?

Yuuma applied the steps below to find the product of (–10.2)(–16.4).Step 1: (–10.2)(–16.4) = (–16.4)(–10.2)Step 2: = (–16.4)(–10) + (–16.4)(–0.2)Step 3: = ____________Step 4: = 167.28Which expression correctly fills in the blank in Step 3?

After surveying students in her homeroom, Katie decided to use a number cube to predict the probability that a randomly chosen student in her school planned to stay after school today for extracurricular activities. In Katie’s simulation, a roll of 1 represents staying after school, while rolls of 2, 3, 4, 5, or 6 represent leaving school at the end of classes.According to Katie’s model, what is the probability that three randomly chosen students will all stay after school for extracurricular activities today?