3) (20 Points- 10 points each for A and B) A) A company that manufactures general-purpose transducers invested $2 million 4 years ago in high-yield junk bonds. If the bonds are now worth $2.8 million, what rate of return per year did the company make on the basis of (a) simple interest and (b) compound interest? B) What is the equivalent worth on December 31,1990, of $1,295 deposited on December 31,1983? Use an interest rate of 6%. Present the economic equivalence function required, showing first the functional notation and then its numerical value