Unit test test review profit is the difference between revenue and cost. the revenue, in dollars, of a company that makes skateboards can be modeled by the polynomial 2x3 + 30x – 130. the cost, in dollars, of producing the skateboards can be modeled by 2x3 – 3x – 520. the variable x represents the number of skateboards sold. what expression represents the profit?
a. 27x – 650
b. 27x + 390
c. 33x – 650
d. 33x + 390

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Kumar consulting operates several stock investment portfolios that are used by firms for investment of pension plan assets. last year, one portfolio had a realized return of 12.6 percent and a beta coefficient of 1.15. the average t-bond rate was 7 percent and the realized rate of return on the s& p 500 was 12 percent. what was the portfolio's alpha?

On april 1, santa fe, inc. paid griffith publishing company $2,448 for 36-month subscriptions to several different magazines. santa fe debited the prepayment to a prepaid subscriptions account, and the subscriptions started immediately. what amount should appear in the prepaid subscription account for santa fe, inc. after adjustments on december 31 of the first year assuming the company is using a calendar-year reporting period and no previous adjustment has been made?