Question $3$ :

What is the future value of a series of equal monthly payments of $2500$ if the payments are extended over $4$ years and the APR is $7\mathrm{.}0\%$ compounded quarterly?

Question $4$:

What is the future value of a series of equal monthly payments of $5500$ if the payments are extended over $4$ years and the interest $6\mathrm{.}0$ is compounded continuously.

Question $5$:

Atlas Transportation is considering installing a temperature logger in all its refrigerated trucks for monitoring temperatures during transit. If the systems will reduce insurance claims by $$45000$ per year for $7$ years how much should the company be willing to spend now if it uses an interest rate of $15\mathrm{.}0\%$ compounded quarterly.