ansas Enterprises purchased equipment for $74,000 on January 1, 2021. The equipment is expected to have a five-year service life, with a residual value of $7,500 at the end of five years. Using the straight-line method, the book value at December 31, 2021, would be:

Ben frank is an electrician who installs lighting fixtures. he charges (in dollars) his clients 15h+40f15h+40f where hh is the number of hours worked and ff is the number of fixtures installed. how much does ben frank charge when he works 77 hours and installs 99 fixtures?