A painting contractor is trying to estimate the cost function for painting jobs. He has the following information: House Square Feet Cost 1 2,600 $3,300 2 3,010 3,700 3 2,800 3,100 4 2,850 3,150 5 4,050 4,700 6 2,700 3,250 7 2,375 2,800 8 2,450 2,800 9 2,600 2,875 10 3,700 4,100 Using the high-low method, calculate the variable cost per square foot and the total fixed cost? Show the cost function (the equation) for the painting job