Anna knits pairs of mittens and scarves. She knits at most 18 pairs of mittens and 12 scarves each month. She has enough yarn to knit 24 items per month. Each pair of mittens sold earns a profit of $3 and each scarf sold earns a profit of $4. How many pairs of mittens and scarves should Anna knit in order to maximize her profit? 18 pairs of mittens and 6 scarves

12 pairs of mittens and 12 scarves

0 pairs of mittens and 24 scarves

24 pairs of mittens and 0 scarves

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

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

Pleas ! i just cant seem to get it right! choose: congruent or proportional choose: cf or ce or bc choose: segment addition postulate or cpctc