Mighty Bright Window Cleaners' monthly income statement at several levels of activity is as follows: Windows washed 1,000 2,000 3,000 Sales revenue $3,000 $6,000 $9,000 Cost of goods sold 1,200 2,400 3,600 Gross profit 1,800 3,600 5,400 Operating expenses Advertising expense 400 400 400 Salaries and wages expense 700 900 1,100 Insurance expense 200 200 200 Postage expense 400 800 1,200 Total operating expenses 1,700 2,300 2,900 Operating income $100 $1,300 $2,500 Required: a. Identify each expense as fixed, variable, or mixed. b.Prepare a contribution margin income statement based on a volume of 5,000 windows.

Which certificate is the lowest level certification that a personal finance manager requires to sell mutual funds, trusts, and variable annuities? a. series 2 b. series 6 c. series 5 d. series 7 e. series 8

Match each of the terms below with an example that fits the term. a. fungibility the production of gasoline b. inelasticity the switch from coffee to tea c. non-excludability the provision of national defense d. substitution the demand for cigarettes

When interest is compounded continuously, the amount of money increases at a rate proportional to the amount s present at time t, that is, ds/dt = rs, where r is the annual rate of interest. (a) find the amount of money accrued at the end of 3 years when $4000 is deposited in a savings account drawing 5 3 4 % annual interest compounded continuously. (round your answer to the nearest cent.) $ (b) in how many years will the initial sum deposited have doubled? (round your answer to the nearest year.) years (c) use a calculator to compare the amount obtained in part (a) with the amount s = 4000 1 + 1 4 (0.0575) 3(4) that is accrued when interest is compounded quarterly. (round your answer to the nearest cent.) s = $