Lake Balboa Manufacturing Company decides to relate total factory overhead costs to direct labor hours (DLH) to develop a cost-volume formula in the form of y a + bx. Observations from 2019 are collected. They are given and on the excel file. Month Direct Labor Hours Factory Overhead 13,000 January February 9,000 19,000 20,000 March 11,000 14,000 April 14,000 16,000 May 23,000 25,000 June 12,000 20,000 July August September October November December 12,000 20,000 22.000 23,000 7,000 14,000 13.000 22,000 15,000 18,000 17,000 18,000 Total 174,000 hours $225,000 Using the Method of Least Squares, calculate the variable rate. Round number to the nearest cent (ex: if 0.456982, then 0.46)