Step-by-step explanation:

She lived there 8 years
1/9 of 18 is 2.
So 4/9 of 18 = 4*2 = 8
So Sara lived in Rochester for 8 years.
Do you have a picture for your question
The answer is D. Think back to the quadratic formula
You would plug in values of a, b, and c to find the zeros of the equations. It would the same way in a spreadsheet program where the cells contain the a, b, and c values but you can have more values and a different equation.
9×2 =18= 2 packs 9×4=36=4 packs 9×5=45=5packs greatest number is 9