4-9 The toll cost per vehicle to cover the cost of the toll booth replacement project in 3 years should be$2.57.
4-12 It will take35 monthsto pay off a $705 debt with monthly payments of $25 at a15% interest rate compounded monthly.
4-16 Computed using the minimum number of compound interest factors we get: B = $633.9730using the present value of annuity factor C = $51.0510using the future value of annuity factor V = $228.1327using the net present value formula
