Simplify (2x^4+5x^3-8x^2-x+10)+(8x^4-4x^3+x^ 2-x+2

The diameter of a ball is 8 in. what is the volume of the ball? use 3.14 for pi. enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

Which of the following are parts of a sphere

The sales tax rate is 7.25%. how much tax in dollars is added on an item that costs $56.00? a. $4.06 b. $7.25 c. $14.50 d. $60.06