Use the graph of fx) to answer the following questions.
15. what is the value of f(-3)?
16. what is the value of f(0)?
17. what is the value of f(5)?
18. what is the value of f(-1)?
19. what is the value of x where f(x) = 6?

#12 find the value of x. #13 find the value of the variable.

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.