Answer:
Gabby received 9 brown marbles.
Step-by-step explanation:
Answer: Option A
or
Step-by-step explanation:
Use the quadratic formula to find the zeros of the function.
For a function of the form

The quadratic formula is:

In this case the function is:

So

Then using the quadratic formula we have that:



Remember that 




or
Answer:
its 10
Step-by-step explanation:
D. Neither A nor B. There you go.