1.	Solve the equation by backtracking.
		A.	y = 1	B.	y =
		C.	y =	D.	y = 3
		Hint
	2.	Solve the equation by backtracking.
		A.	a = –10	B.	a = 10
		C.	a = -1	D.	a = 1
		Hint
	3.	Solve the equation by backtracking.
		A.	f = –28	B.	f = –24
		C.	f = 16	D.	f = –21
		Hint
	4.	Solve the equation by backtracking.6(x + 5) 2 – 10 = 14
		A.	x = –3	B.	x = –7
		C.	x = 3	D.	x = –3 and x = –7
		Hint
	5.	Give the approximate solution of this equation.5 + (2c – 3) 2 = 5
		A.	c = 1.5	B.	c = 1.5 and c = –1.5
		C.	c = –1.5 and c = –1.5	D.	c = –1.5
		Hint