8th Grade Math

Trapezoid WKRP was translated 4 units to the left and 5 units up on a coordinate grid to create trapezoid W'K'R'P'. Which rule describes this transformation?

Which representation shows y as a function of x?

• 
• 
• 
• 

A bowling ball shaped like a sphere has a diameter of 21.6 centimeters. Which measurement is closest to the volume of the bowling ball in cubic centimeters?

A customer will borrow $12,000 to buy a car. Which loan option would allow the customer to pay the least amount of interest?

• A 6-year loan with a 4.7% annual simple interest rate

• A 5-year loan with a 4.2% annual simple interest rate

• A 4-year loan with a 5.2% annual simple interest rate

• A 3-year loan with an 8.4% annual simple interest rate

Which table represents a non-proportional relationship between x and y?

• 
• 
• 
• 

Triangle TRW is shown on the coordinate grid.

Triangle TRW will be dilated by a scale factor of n with the origin as the center of dilation to create triangle T R′ ′W′. Which ordered pair best represents the location of point R′?

A student’s parents invested $5,000 in a college savings account that pays 4.85% annual simple interest. No additional deposits or withdrawals will be made.

Which amount is closest to the interest earned on the account at the end of 15 years?

• $10,174.11

• $5,174.11

• $8,637.50

• $3,637.50

Triangle XYZ is rotated 90° clockwise about the origin to form triangle X Y′ ′Z′.

Which statement is true?

• Triangle XYZ is not congruent to triangle X'Y'Z'

• The area of triangle XYZ is equal to the area of triangle X'Y′Z' .

• The sum of the angle measures of triangle XYZ is 90° less than the sum of the angle measures of triangle X'Y'Z'

• The angle measures of triangle XYZ are less than the corresponding angle measures of triangle X'Y'Z'

A water tank currently contains 275 gallons of water. The amount of water in the tank will decrease at a constant rate of 15 gallons per week.

Which function can be used to find t, the total number of gallons of water in the tank after w weeks?