The cash-flow diagram is provided. a. If P = $2,000, A = $250, and i% = 9% per year, then N = ? b. If P = $2,000, A = $250, and N= 8 years, then i = ? c. If A = $250, 1% = 9% per year, and N=4 years, then P = ? d. If P= $2,000, i% = 9% per year, and N=4 years, then A = ? P A / year 1 2 3 4 End of Year 5 Interest = i% / year N-1 N