Given the following cost and activity observations for Bounty Company's utilities, use the high-low method to determine Bounty's variable les cost per machine hour Round your answer to the nearest cent. Cost Machine Hours March $3,029 14,961 April 2,672 9,573 May 2,834 11,863 June 3,807 18,103 a. $0.93 b. $0.89 c. $0.13 d. $1.46