What is the volume of this solid?

A 3.2 m3
B 32 m3
C 320 m3
D 3,200 m3

| |
10 m | | 4 m
| _|
8 m

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

X+y=-4 x-y=2 use elimination with adding and subtraction