Provide the following:

*An appropriate risk-adjusted rate of return for use in evaluating an investment in Netflix, Inc., and Amazon.com, Inc.:

(I found the info below on macroaxis, Please explain it to me what this means, I also need help finding Amazon's risk adjusted rate of return)

Netflix Inc has current Risk Adjusted Performance of (0.003899).

Netflix RAP= (ER[a] - RFR) * STD[b])/STD[b] / RFR = (0.003899)

ER[a] = Expected return on investing in Netflix

RFR = Risk Free Rate of return. Typically T-Bill Rate

STD[b] = Standard Deviation of selected market or benchmark.