Dorothy wagner is currently selling 90 "i ♥ calculus" t-shirts per day, but sales are dropping at a rate of 7 per day. she is currently charging $7 per t-shirt, but to compensate for dwindling sales, she is increasing the unit price by $1 per day. how fast, and in what direction, is her daily revenue currently changing?

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

Answer this question, only if you know the answer. 30 points and brainliest!