The graph below models the height of a remote-control helicopter over 20 seconds during fl ight. y x 10 5 15 20 (0,46) Time (seconds) H e i g h t ( f t ) (5,19) (15,14) (20,17) (10,20) 50 40 30 20 10 Over which interval does the helicopter have the slowest average rate of change?

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.

step-by-step explanation:

i found the koficent of the linear function and i foun c acordind to the strict formula y=kx+c and then i took 2 as an x and replacet it on the formula i found and then foun the y

i would say b) is your answer

sorry if im wrong

step-by-step explanation: