The bottom line of the tent above was originally sitting on the x-axis. Julie lowered the whole picture by changing the coordinate pair at each vertex and connecting the points. What changes did Julie make?

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?