An expression is shown below:

3x3y + 12xy − 9x2y − 36y

part a: rewrite the expression so that the gcf is factored completely. show the steps of your work. (4 points)

part b: rewrite the expression completely factored. show the steps of your work. (6 points)

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer