If 45 cookies will serve 15 students how many cookies are needed for 30 students

This is geometry. could anyone ? i can't fail this class. my grade is quite low already.

6.3x+14 and 1.5x-6 answer in simplified form

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?