Determine whether the given value makes the open
sentence
true.

92 –2m≤7+3m, when m =12

14-3n ≥ 8 + 2n when n = -5

8 + |y| -x=y+ |3x|,when x=-4 and y=9

simplify the expressions by combining like terms.

4a ² + 7b ² + 5b ² - 2a

3x + 8x ² - 4x + 15

match the example with the correct property

(12 x 7) x 5 = 12 x (7 x 5) commutative property

9(x + 4) = 9∙x + 9·4 associative property

3 + 4 + 8 = 4 + 3 + 8 distributive property

if x = y, then y = x symmetric property

Researchers are conducting experiments to determine the role of alcohol in the development of depression. after the study is complete, they determine that the relative risk of developing depression is 1.55 with a 95 % ci of 1.2 -1.9. each group is then divided into nonsmokers and smokers. the relative risk for the nonsmokers is 1.12 with a 95% ci of 0.87-1.37. the relative risk for the smokers is 1.7 with a 95 % cl of 1.5-1.9. what type of bias may affect this study? a. procedure bias b. recall bias c. selection bias d. confounding e. lead-time bias