Please do both problems and show all work. i am trying to learn this chapter and not sure whats going on.

(Prob. 5.32) The industrial engineering department for Invade Air Fresheners has found that a new packing machine should save $45,000 for each of the next 8 years. The machine will require a major overhaul at the end of 5 years costing $12,000. The machine's expected salvage value after 8 years is 7.5% of its original cost. If money is worth 5%, determine the amount Invade should be willing to pay for the machine 1. (Prob. 5.20) The head coach at State University has received an offer to buy out his contract. The offer is $175,000 now and a semiannual annuity of $75,000 for the next 3 years. If money is worth 6.1% to the coach, what is the buyout worth? 2