Which of the following are examples of specialization? check all that apply.
a. victor is a musician. he hires a domestic worker to clean his apartment twice a week so that he can concentrate on composing music.
b. akshay writes well, and eleanor is an expert on health; therefore, akshay writes novels, and eleanor is a nutritionist.
c. felix and megan each spend half the day tutoring and half the day grading papers.
d. in between tutoring and grading papers, they each must spend an hour driving home from the tutoring center and getting set up for grading papers.

University hero is considering expanding operations beyond its healthy sandwiches. jim axelrod, vice president of marketing, would like to add a line of smoothies with a similar health emphasis. each smoothie would include two free health supplements such as vitamins, antioxidants, and protein. jim believes smoothie sales should fill the slow mid-afternoon period. adding the line of smoothies would require purchasing additional freezer space, machinery, and equipment. jim provides the following projections of net sales, net income, and average total assets in support of his proposal. sandwichesonly sandwiches and smoothies net sales $ 750,000 $ 1,350,000 net income 120,000 210,000 average total assets 350,000 750,000 return on assetschoose numerator ÷ choose denominator = return on assets÷ = return on assets÷ = profit margin÷ = profit margin÷ = asset turnover÷ = asset turnover÷ = times