you want to go to the laser tag arena and find out that it costs a fee of $5 for equipment plus an additional $7 for each hour you spend there. Write an equation to represent the total amount spent at the laser tag arena (y) after x amount of hours. Use your equation to find out the total amount you spend at the arena after 2 hours. Use your equation to find out how many hours you could spend at the laser tag arena if you had $47

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