The length of the rectangle below is (2x-3) and the width is (x+7). Find the
area of the rectangle in terms of x.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Change negative exponents to positive. then solve. round to four decimal places

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