Please help me 8th grade math test

1. What is the difference between their volumes? Round your final answer to the nearest tenth.

a)7.3 inches b)6.7 inches c)6.3 inches d)5.7 inches( this will be the first picture)

4. Bo is making a step stool for his bathroom sink that is shaped like a rectangular prism.(second image)

What is the total surface area of the step stool?

a)6 3/4 b)4 1/2 c)5 d)5 3/4

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?