Determine a value index for 2014 using 2004 as the base period. Betts Electronics purchases three replacement parts for robotic machines used in its manufacturing process. Information on the price of the replacement parts and the quantity purchased is given below: 2005 2014 Part Price ($) Quantity Price ($) Quantity RC-33 $0.50 320 $0.60 340 SM-14 1.20 110 0.90 130 WC-50 0.85 230 1.00 250