State whether each equation is true or false for the value of the variable given.

1.		y = 7	2.	5x2 - 3(4) = 8	x = 2
3.	n3 ÷ 4 ÷ n2 ÷2 ≤1/2	n = 4	4.	(23 - 3y) ÷ (42 - 2) ≥ 12	y = 2
5.	n3 - n2 + n < 130	n = 6	6.		x = 0.3

 

Find the solution set for each inequality if the replacement stats are x = {3¹/₂, 2, 3, 1¹/₄} and y = {3, 5, 6, 8}.

7.	y + 6 <10		8.	x - 1 > 3
9.	4x - 2 < 5		10.	6y ≥ 36
11.	y/3 ≤ 2		12.	2x - 1 ≤ 2

 

Solve each equation.

13.	s = 0.87 -0.33		14.	v = 2 1/4 ÷ 9
15.			16.	w = 140 ÷ [2(8-3)]
17.	d = 103 - 54		18.
19.			20.
21.			22.

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