An arrow is shot upward with an initial velocity of 64 feet per second. The height of the arrow h(f) in terms of the time since the arrow was released is h(f) = 64t - 16r^2. Name the axis of symmetry and the vertex.

c

step-by-step explanation:

c

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.