Intro to derivatives

Suppose that a six-month siliver futures price is currently $16.50. The spot silver price S15 rate of interest is 8% per annum. . The spot silver price S15.50. The risk-free a. Is there an arbitrage opportunity? Show your work please b. If there is an arbitrage opportunity, please construct a portfolio (arbitrage strategy) that will generate positive cash payoffs with zero investment. c. What is the arbitrage profit per ounce of silver