1.	Find a solution to the equation using backtracking. 8b – 5 = 19
		A.	b = 2	B.	b = 3
		C.	b = –2	D.	b = –3
		Hint
	2.	Find a solution to the equation using backtracking.
		A.	s = 15	B.	s = 21
		C.	s = 24	D.	s = 18
		Hint
	3.	Find a solution to the equation using guess-check-and-improve. 10a + 4(a + 1) = 32
		A.	a = 2	B.	a = 10
		C.	a = 4	D.	a = 7
		Hint
	4.	Find a solution to the equation using guess-check-and-improve.
		A.	n = 1	B.	n = 7
		C.	n = 6	D.	n = 2
		Hint
	5.	Nine more than a number is the same as 18 less than 4 times the same number. Write an equation that models this statement.
		A.	y – 9 = 4y – 18
		B.	y + 9 = 4y – 18
		C.	y – 9 = 18 – 4y
		D.	y + 9 = 18 – 4y
		Hint