There are 45 female performers in a dance recital. The ratio of men to women is 4:9. How many men are in the dance recital? There are men in the dance recital.

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?