The revenue (X) from the sales of a compay has an expected value of $7,263, with a standard deviation of $495 while the cost (Y) has an expected value of $3,175, with a standard deviation of $231. The covariance between the revenue and cost is 1,691. What is the variance of the profit (X-Y) of the company?

About 20 years ago, sturdy light, inc., produced a sturdy, lightweight backpack in a market that was rapidly growing. sturdy light became a leader in this market. eventually, the backpack market reached the maturity stage and slowed down. however, by this time, sturdy light had developed a strong brand name and continued to steadily lead the market. which of the following describes this scenario? a. sturdy light was a star that developed into a cash cow. b. sturdy light was a question mark that developed into a star. c. sturdy light was a dog that developed into a question mark. d. sturdy light was a cash cow that developed into a star.