Consider manufacturing equipment that has an installed cost of $120,000. The equipment is expected to generate $45,000 of annual energy savings during its first year of installation. The value of these annual savings is expected to increase by 5% per year (over the previous year) because of increased fuel costs. Assume that the equipment has a service life of 10 years (or 5,000 operating hours per year). Determine the equivalent dollar savings per each operating hour at i=10%? Select one: $5.5 per hour $4.45 per hour $7.24 per hour $4.29 per hour $6.99 per hour