Xavier had 24 matchbox cars in his collection. He has been collecting 11 cars per month for the last few months. How many months has he been collecting

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?