Math Problems… Please Help, Cant Get The Answers..?

1. determine which binomial is not a factor of 4x^4 – 21x^3 – 46x^2 +219x + 180
2. Divide 4x^3-x^2-x-3 by x + 2
(Find the roots of the polynomial equation )
3. x^3 – 2x^2 + 10x + 136 = 0
(Find all Zeros of the equation. )
4. 2x^4 – 5x^3 + 53x^2 – 125x +75 = 0
5. -x^3 – x^2 – 15x -15 =0
(rewrite the equation in vertex form )
14. y = x^2 + 12x + 28
15. y = x^2 – 10x + 18
16. Divide 3x^3 – 2x^2 – x – 4 by x + 2
17. The formula for the volume of a sphere is V = 4/3(pie)r^3. Find the radius, to the nearest hundredth, of a sphere with a volume of 15 in.^3.
18. The formula for the volume of a cone is V = 1/3(pie)r^2H . Find the radius, to the nearest hundredth, of a cone with the height of 3 in. and a volume of 12 in ^3
19. (x + 6 )^3/5 = 8
20. You have a coupon good for 6$ off the price of any large pizza. Your also get a 20% discount on any pizza if you show your student ID. How much more would you pay for a large pizza if the cashier applies the coupon first?
21. A store is offering a 25% discount on all items. Also, employees get a 10% employee discount. If you are an employee which discount would you want to be applied first to save the most money?
Thanks so much D: Im sorry its alot, we were given a packet of 140 questions and these were the ones i couldnt figure out.. much thanks

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