An inventors royalty stream (revenue) begins at the end of the first year with a payment of $14000. Over the following 5 years, that royalty stream changes each year by a constant amount, or Gradient. Interest is 7% per year and we know that the present worth of the 6 years of royalties is $50000.(A) what is the value of the Gradient G? (B) calculate the future worth equivalent of the royalties at the end of year 6?