The height of a small rise in a roller coaster track is modeled by () = −. + . + . , where x is the distance in feet from a supported pole at ground level. Find the greatest height of the rise.

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.

replication and blocking

step-by-step explanation:

im not sure what this means: mc011-7.jpg

step-by-step explanation:

b. f(x) = –√x + 3this is the correct answer