8th Grade Math Final Exam Review 4

What is the value of x for the equation below?

-5x + 27 = 3(3x - 9)

• 3.65

• 2.68

• 3.85

• 2.95

Susie left her house and road a train north 10 miles to her mom’s house. She then road another train east 11 miles. If she rode on an airplane straight home, how far would that be?

• 11.36 miles

• 15.86 miles

• 12.5 miles

• 14.86 miles

Papa Smurf is comparing how loan lengths affects the cost of credit on a $9000 loan. From the table, he sees that as the loan length increases, the monthly payment decreases. At the end of one year, how much more would Papa Smurf repay on the 24-month loan than he would repay on the 36-month loan?

• $746.52

• $2245.92

• $1499.40

• $2691.36

Lucy deposited $1000 into an account that earns 5% compound interest. How much interest will Lucy earn after 10 years?

• 611

• 628.89

• 589.99

• 700

Dan’s school is planning a field trip to a museum. Bus Company A charges a $40 rental fee plus $4 for each student. Bus Company B charges $100 plus $2 per student. How many students would have to go for the cost to be the same?

• 10 students

• 20 students

• 30 students

• 40 students

Melinda is trying to decide between two different storage containers. She wants to purchase the container that has more volume. Which shape should she use. What is the difference in their volumes? (The diameter of the cylinder is 20 in.)

• The rectangular container is larger and has a volume of 7,536 in³

• The rectangular container is larger and has a volume of 6,480 in³

• The cylindrical container is larger and has difference in volume is 1056 in³

• The cylindrical container is larger and has a volume of 6,480 in³

What is the approximate volume of the farmer’s silo shown below? Round your answer to the nearest whole number. (The radius of the cylinder is 12 ft.)

• 37,981 ft³

• 28,938 ft³

• 34,364 ft³

• 30,762 ft³

Shawn wants to cover the roof (including the front and back triangular facing sides) of his shed. Tin roofing material costs $3 per square foot. What is the total cost of the roofing material?

• $2,448

• $2,300

• $2,408

• $2,600

The water levels of five Texas lakes were measured on the same day in 2010. The table below shows the number of feet above or below normal level for each lake.

Write a list that shows the numbers in the table from greatest to least?

• 0.1, 0.07, -1.43, -2.65, 0.16

• 0.07, 0.16, 0.1, -1.43, -2.65

• -2.65, -1.43, 0.07, 0.16, 0.1,

• 0.16, 0.1, 0.07, -1.43, -2.65

Decide which table or tables represent a linear function.

• I and II

• II and III

• I only

• II only