Equivalent Cash Flows: Compute the equivalent uniform series amount for an arithmetic gradient amount

of $$800$ at a $4\mathrm{.}2\%$ interest rate and $5$ periods.

Ans: $$1534\mathrm{.}22$

Equivalent Cash Flows: Compute the equivalent arithmetic gradient amount for a present sum value of

$$18,000$ at a $4\%$ interest rate and $8$ periods.

Ans: $$811\mathrm{.}52$

Compound Interest: You loan a friend $$2400$ at a certain monthly interest rate. After $5$ months, he pays

you back $$2950.$ What was the monthly interest rate?

Ans: $4\mathrm{.}2\%$