Use the following information # Machine Maintenance Month Hours (X) Costs (Y) Jan 3,000 $440 Feb 4,500 $690 Mar 8,000 $510 Apr 7,000 $600 6,000 $550 Jun 9,000 $980 Jul 3,500 $840 May 08:2 22-09 Aug 5,500 $600 What is "a" Value in the equation of the line y = a +bx using the high-low method and this data? Microsof... A (1) ENG Cya