How do I find the weight of a cone.

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x