Four years ago, hakim borrowed $275 to pay for new tires for his car. he agreed to pay interest at a simple annual interest rate of 4%. how much did hakim owe at the end of 4 years?   a.$286b.$319c.$715d.$1375       i say b am i right 

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