presented below are the production data for the first six months of the year for the mixed costs incurred by vertise company. month cost units january $4,890 4,100 february 4,426 3,520 march 6,730 5,200 april 9,724 8,250 may 5,900 4,900 june 7,336 6,600 vertise company uses the high-low method to analyze mixed costs. how would the cost function be stated?