5. is this function one-to-one? how do you know?
6. what is f(-1)?
7. what is f(2)?
8. what is f(0)?

The price of a particular stock is represented by the linear equation , where x represents the number of weeks the stock has been owned and y represents the price of the stock, in dollars. if this relationship continues, what is the price of the stock after it has been owned for 12 weeks? $92.55 $94.37 $100.52 $114.39

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.