I need help on the top ones and the bottom ones but they are 2 different ways of solving them, on the top ones you have to figure out if the angle is complementary or supplementary on the bottom, you have to write and solve an equation to find the measure of X in each figure and show the work for each step.

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.

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