8th Grade Final Review (B; 21-40)

The scatter plot below shows the relationship number of items that customers purchased at a grocery store and the total cost of their purchase. Based on the equation of the trend line, how many items would you expect someone to have purchased if the total cost of the purchase was $27.50?

• A. 11 items
• B. 9 items
• C. 15 items
• D. 12 items

Of the transformations listed below, which would be described as “rigid” transformations?

• A. Transformations I, II and III
• B. Transformation IV only
• C. Transformations I and II
• D. Transformations I and III

Throughout his construction career, Kevin has worked on job sites at approximately 200 different stadiums. If each of the stadiums that Kevin worked at can hold approximately 8 x 10⁴, find the combined capacity of all 200 stadiums Kevin has worked at. Express your answer in scientific notation.

• 
• 
• 
• 

The diagram below shows the relationship between sets of real numbers. Which could not be the type of number represented by section C?

• A. Whole numbers
• B. Natural numbers
• C. Irrational numbers
• D. Integers

Dawn would like to join three straws together to form a right triangle. Which of the following does not represent three possible lengths of straws that Dawn could use to do this?

• A. 4.5 inches, 6 inches and 7.5 inches
• B. 6 inches, 8 inches and 10 inches
• C. 6 inches, 6 inches and 12 inches
• D. 7.5 inches, 10 inches and 12.5 inches

Which is a true statement about the rate of change shown in the graph and the table?

• A. The rate of change in the table and the graph are the same.
• B. The rate of change in the table is greater than the rate of change in the graph.
• C. The rate of change in the graph is greater than the rate of change in the table.
• D. There is not enough information to compare each rate of change.

Find the value of x needed to make the equation true.

• A. 11
• B. -1
• C. 7
• D. 13

Which of the following is the correct measure of angle ABC?

• A. 30°
• B. 88°
• C. 132°
• D. 44°

The graph below shows the number of homework questions Kate has left based on the amount of time she has been working. Which equation represents the function shown?

• 
• 
• 
• 

The graph below represents the top view of a closet in Sarah’s house. If each unit on the graph represents 1.5 feet, what is the perimeter of the closet?

• A. 27 feet
• B. 18 feet
• C. 9 feet
• D. 21 feet