The weekly revenue from the sale of emeralds at Eduardo's Emerald Emporium is decreasing at a rate of €700 per €1 increase in price, and the price is decreasing at a rate of €0.85 per additional emerald sold. What is the marginal revenue?

(select all that apply) examples of email use that could be considered unethical include denying receiving an e-mail requesting that you work late forwarding a chain letter asking for donations to a good cause sending a quick message to your friend about last weekend sending your boss the monthly sales figures in an attachment setting up a meeting with your co-worker sharing a funny joke with other employees