Given the polynomial 21x^4+3y-6x^2+34 What polynomial must be subtracted from it to obtain 29x^2-7? What polynomial must be added to it to obtain a first degree polynomial?

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

How can constraints be used to model a real-world situation?

Need same math paper but the back now i hope your able to read it cleary i need with hw