Answer:
The zeros of the given function are -9,-1 and 12.
Step-by-step explanation:
The given function is

It is given that the x-intercept of the graph is -9, therefore -9 is a zero of the function.
Since -9 is the zero of the function, therefore (x+9) is a factor of f(x). Use synthetics method or long division method to divide the function by (x+9).




Use zero product property and quote each factor equal to 0.

Therefore zeros of the given function are -9,-1 and 12.
Answer:
90-15x
Step-by-step explanation:
x being the number of weeks
Answer:
Option 2
Step-by-step explanation:
You can see that the graph of the inequality is x <= -3, so you want to find why inequality matches that. Solve each one:
1
.
doesn't match
2.

Does match, so this is the answer.
Answer:
no
Step-by-step explanation: