The perimeter of a rectangle is 16 inches. The equation that represents the perimeter of the rectangle is 21+ 2w=16, where I
represents the length of the rectangle and w represents the width of the rectangle. Which value is possible for the length of
the rectangle?

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?