What is the relationship between two goods if the marginal rate of substitution between them is zero or infinite? Explain.​

Atennis club charges a monthly membership fee of $150 and charges it members $10 per hour to use a court. there's also $500 fee to become a member. stella joined the tennis club last spring, and she has been a member for 5 months. she has been playing 10 hours of tennis each month. stella values an hour of her time at $20. during a boring afternoon meeting, stella thinks about reserving a court to work on her serve for an hour tonight. what's stella's opportunity cost of working on her serve for an hour?

Suppose an investor starts with a portfolio consisting of one randomly selected stock. as more and more randomly selected stocks are added to the portfolio, what happens to the portfolio's risk

Global tek plans on increasing its annual dividend by 15 percent a year for the next four years and then decreasing the growth rate to 2.5 percent per year. the company just paid its annual dividend in the amount of $.20 per share. what is the current value of one share of this stock if the required rate of return is 17.4 percent? $1.82 $218 $2.03 $2.71 $3.05