A machine cost $2,540 on January 1, 2019, and $3,780 on January 1, 2021. The average inflation over these 2 years was 6% per year. What is the true percentage increase in the price from 2019 to 20217 Select one: a.48.8189% b.32.4483% c.6% d.28.0423% e.24.4989% If you invested $2,000 in a partnership, that paid you $633 per year for 4 years, what is your rate of return? Select one: a 15.15% b. 11.85% d 10.15%