The document discusses representing income data from a store in Kuala Terengganu, Malaysia from 2003-2005 using bar graphs. It provides the store's annual total revenues, expenses, and profits. A vertical bar graph, horizontal bar graph, and pie chart could be used. Key information that can be gleaned from the graphs is the highest and lowest revenues, expenses, and profits by year, and differences in amounts between years. Total profits were RM70,150 over the three years, with the highest in 2004 at RM26,101 and lowest in 2005 at RM18,402.