Linda and Richard are married and file a joint return for 2020. During the year, Linda, who works as an accountant for national airline use $2,100 worth of free passes for travel on the airline; Richard used the same amount. Linda and Richard also used $850 worth of employee discount coupons for hotel rooms at the hotel chain that is also owned by the airline. Richard is employed at State University as an accounting clerk. Under a tuition reduction reduction plan, Richard saved $4,000 in tuition fees during 2020. He is studying for a master's degree in business at night while still working full-time. Richard also had $30 worth of personal typing done by his administrative assistant at the University. What is the amount of fringe benefits that should be included in Linda and Richard's gross income on their 2020 tax return?

The monthly demand equation for an electric utility company is estimated to be p equals 60 minus left parenthesis 10 superscript negative 5 baseline right parenthesis x, where p is measured in dollars and x is measured in thousands of killowatt-hours. the utility has fixed costs of $3 comma 000 comma 000 per month and variable costs of $32 per 1000 kilowatt-hours of electricity generated, so the cost function is upper c left parenthesis x right parenthesis equals 3 times 10 superscript 6 baseline plus 32 x. (a) find the value of x and the corresponding price for 1000 kilowatt-hours that maximize the utility's profit. (b) suppose that the rising fuel costs increase the utility's variable costs from $32 to $38, so its new cost function is upper c 1 left parenthesis x right parenthesis equals 3 times 10 superscript 6 baseline plus 38 x. should the utility pass all this increase of $6 per thousand kilowatt-hours on to the consumers?