Sue has a Bloomingdale's credit card. On Monday she charged a $47.90 sweater and then lost the card. Myra found it Monday and charged a $100 scarf and $400 purse. Sue missed her card at 8 a. m. Tuesday and called the store. Myra then charged a coat for $4,000. Sue's bill was $4,547.90. Sue owes: a. $4,547.90.
b. $547.90.
c. $97.90.
d. $47.90.

Suppose a ceiling fan manufacturer has the total cost function c(x) = 48x + 1485 and the total revenue function r(x) = 75x. (a) what is the equation of the profit function p(x) for this commodity? p(x) = (b) what is the profit on 35 units? p(35) = interpret your result. the total costs are less than the revenue. the total costs are more than the revenue. the total costs are exactly the same as the revenue. (c) how many fans must be sold to avoid losing money? fans

Stocks a, b, and c are similar in some respects: each has an expected return of 10% and a standard deviation of 25%. stocks a and b have returns that are independent of one another; i.e., their correlation coefficient, r, equals zero. stocks a and c have returns that are negatively correlated with one another; i.e., r is less than 0. portfolio ab is a portfolio with half of its money invested in stock a and half in stock b. portfolio ac is a portfolio with half of its money invested in stock a and half invested in stock c. which of the following statements is correct? a. portfolio ab has a standard deviation that is greater than 25%.b. portfolio ac has an expected return that is less than 10%.c. portfolio ac has a standard deviation that is less than 25%.d. portfolio ab has a standard deviation that is equal to 25%.e. portfolio ac has an expected return that is greater than 25%.

Sue now has $125. how much would she have after 8 years if she leaves it invested at 8.5% with annual compounding? a. $205.83b. $216.67c. $228.07d. $240.08e. $252.08