1.	Which is the graph of y = 2.5x?
		A.		B.
		C.		D.
		Hint
	2.	For equations of the form y = ax, where a is a constant, what is true about a if the y-values change little for small values of x, but increase quickly for large x values?
		A.	a > 1	B.	0 < a < 1
		C.	a = 1	D.	–1 < a < 0
		Hint
	3.	A guest on a talk show tends to receive many phone calls right after she is on the show, and then the calls become less frequent. This can be represented by the equation y = 30(0.92)d, where y is the number of phone calls after d days. How many phone calls should she expect after a week?
		A.	28	B.	23
		C.	2	D.	17
		Hint
	4.	A guest on a talk show tends to receive many phone calls right after she is on the show, and then the calls become less frequent. This can be represented by the equation y = 20(0.53)d, where y is the number of phone calls after d days. On what day should she expect to have 3 calls?
		A.	10	B.	2
		C.	15	D.	3
		Hint
	5.	Given the coordinates (0, 3), (1, 11), (2, 19), (3, 27), would a graph of these points exhibit exponential behavior?
		A.	yes, exponential and linear behavior	B.	no, it would display linear behavior
		C.	yes, exponential behavior only	D.	no, it would not display exponential or linear behavior
		Hint