Can you please help me solve this?

Exercise #5: A digital printer costs $12,000. It can generate production savings of $4,000 for 5 years. If you wait to buy one year, next year's model will cost $11,500 and will generate production savings of $4,500 per year for 5 years. The cost of capital is 12%. Should you buy now or wait? NPVBW = $ [15] NPVwait = s ............ [16] ..................... Exercise #6: A forklift will last for only 3 more years. It costs $6,400 a year to maintain. For $19,000 you can buy a new lift that can last for 10 years and should require maintenance costs of only $3,400 a year. Should you replace the forklift if the cost of capital is 14%? A. EAC of Old = [17] B. EAC of New: [13] C. Better Option is to