QUESTION 19 The phone bill for a law firm consists of both fixed and variable costs. Refer to the four month data below and apply the high-low method to answer the qu Total Bill M 490 $ 3 200 June 210 $2700 180 $2650 August 330 $2.800 i the company uses 390 minutes in September, how much will the total bill be? (Round your interonediate calculations to two decimal places.) 53 033.DO $3 356 70 53.381.70