At frank's delicatessen, frank noticed that the elasticity of customers differed in the short and longer term. frank also noticed that his increase in the price of sandwiches had other effects on his store. in particular, the number of sodas sold declined while the number of yogurts sold went up. how might you explain this pattern? if soda is a complement to sandwiches, then the cross-price elasticity is thus, as frank loses sandwich sales from the price increase, he will lose soda sales as well. if yogurt, on the other hand, is a substitute for sandwiches, then the cross-price elasticity is thus, as the price of sandwiches increases, more yogurt is consumed.
a. negative; negative
b. positive; negative
c. positive; positive
d. negative; positive

An investment counselor calls with a hot stock tip. he believes that if the economy remains strong, the investment will result in a profit of $40 comma 00040,000. if the economy grows at a moderate pace, the investment will result in a profit of $10 comma 00010,000. however, if the economy goes into recession, the investment will result in a loss of $40 comma 00040,000. you contact an economist who believes there is a 2020% probability the economy will remain strong, a 7070% probability the economy will grow at a moderate pace, and a 1010% probability the economy will slip into recession. what is the expected profit from this investment?

Areal estate agent is considering changing her cell phone plan. there are three plans to choose from, all of which involve a monthly service charge of $20. plan a has a cost of $.42 a minute for daytime calls and $.17 a minute for evening calls. plan b has a charge of $.52 a minute for daytime calls and $.15 a minute for evening calls. plan c has a flat rate of $80 with 275 minutes of calls allowed per month and a charge of $.38 per minute beyond that, day or evening.a. determine the total charge under each plan for this case: 150 minutes of day calls and 70 minutes of evening calls in a month. (do not round intermediate calculations. round your answer to 2 decimal places. omit the "$" sign in your response.)c. if the agent will use the service for daytime calls, over what range of call minutes will each plan be optimal? (round each answer to the nearest whole number.include the indifference point itself in each answer.)d. suppose that the agent expects both daytime and evening calls. at what point (i.e., percentage of total call minutes used for daytime calls) would she be indifferent between plans a and b?

During the month of march 2017, weimar world, a tax-preparation service, had the following transactions. * billed $496,000 in revenues on credit * received $164,000 from customers' accounts receivable * incurred expenses of $194,000 but only paid $87,700 cash for these expenses * prepaid $32,220 for computer services to be used next month what was the company's accrual basis net income for the month? select one: a. $302,000 b. $264,080 c. $ 41,860 d. $408,300 e. none of the above