Which of these is an example of proper formal writing for a business email ? a. ill send the files as soon as i can. i’m doing something else at the moment b. i can’t send you the files i’m busy with some other important work c. i am unable to send you the files at the moment due to an urgent matter d. i have a lot on my plate right now i’ll send you the files later

Until recently, hamburgers at the city sports arena cost $4.70 each. the food concessionaire sold an average of 13 comma 000 hamburgers on game night. when the price was raised to $5.40, hamburger sales dropped off to an average of 6 comma 000 per night. (a) assuming a linear demand curve, find the price of a hamburger that will maximize the nightly hamburger revenue. (b) if the concessionaire had fixed costs of $1 comma 500 per night and the variable cost is $0.60 per hamburger, find the price of a hamburger that will maximize the nightly hamburger profit.