f$.(1)$ What's the future value of a $3-$year ordinary annuity of $$100$ if the appropriate interest

rate is $10\%?$

$(2)$ What's the present value of the annuity?

$(3)$ What would the future and present values be if the annuity were an annuity due?

g$.$ What is the present value of the following uneven cash flow stream? The appropriate

interest rate is $10\%,$ compounded annually.