11. You estimate that the maintenance cost of a package boiler is $500 for the first year but it will increase by $50 more each year than the previous year after the first year of service. Which type of series is this? a. Irregular b. Uniform C. Single d. Gradient 12. can be said is the interest rate required for any project to be accepted. a. IRR b. MARR C. CPI d. EUAC I 13. Cash Flow at ABC Oil Company is continuously reinvested. An Investment in a new data logging system is expected to return a nominal interest of 40%, compounded continuously. What is the effective interest rate earned by this investment? a. 49.2% b. 39.2% c. 59.2% d. 69.2% 14. A is an interest bearing account into which regular deposits (payments) are made in order to accumulate a certain desired amount. a. Capital Recovery b. Uniform payment series c. Sinking fund d. Gradient series