The lunchroom workers at Bertha C. Boschulte Middle School can move a total of 600 students through 5 lunch lines in exactly one hour. How many students move through each lunch line per minute?

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?