1.	What is a conjecture?
		A.	an educated guess that has been proved
		B.	a ''shot in the dark'' guess that hasn't been proved yet
		C.	an educated guess that hasn't been proved yet
		D.	a ''shot in the dark'' guess that has been proved
		Hint
	2.	What type of relationship does the equation have if its first differences are constant?
		A.	quadratic	B.	linear
		C.	constant	D.	cubic
		Hint
	3.	What type of relationship does the equation have if its second differences are constant?
		A.	constant	B.	quadratic
		C.	cubic	D.	linear
		Hint
	4.	Which differences are constant in a cubic equation?
		A.	fourth	B.	first
		C.	second	D.	third
		Hint
	5.	What is the relationship between constant second differences and the coefficient of the equation?
		A.	the second difference is –2 times the coefficient
		B.	the second difference is the same as the coefficient
		C.	the second difference is 2 times the coefficient
		D.	the second difference is opposite the coefficient
		Hint