If a = 3, b = – 1 and c = 2, then a + b + c
a) 5
b) – 5
c) 4
d) – 4
The expression (3c – 3d) – (c – 3d) when simplified is
a) 2c – 6d
b) 2c
c) 4c – 6d
d) 4c

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

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