Write an equation for the polynomial graph below

What is the exact volume of the cylinder? 16in going into the middle of the top of the cylinder and 40in in height a) 25,600(pi)3 b)10,240(pi)3 c)1280(pi)3 d)640(pi)3

What is the equation of the graph below? y=sec(x)-4

2,10,-50 next two numbers geometric sequence