9.

A. z – 9

B. z + 15

C. z – 15

D. z + 90

Step-by-step explanation:

Answer

(z+15)

Use the quadratic formula to get the answer you seek.

You should arrive at

(z-6)(z+15)

b. the decimal could be two-tenths.

step-by-step explanation:

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph