Suppose that with a certain phone company, an international long distance phone call from Canada to Brazil costs $0.90 for the first minute (up to and including 60 seconds), plus $0.50 for each additional minute or part of a minute. Note: "Part of a minute" means that if a new minute is started even just by one second, a full minute is charged. For example, a 5 min 1 sec phone call costs the same as a 5 min 50 sec phone call and the same as a 6 min 0 sec phone call. Suppose C (1) is the function that gives the cost of making a f minute long phone call. On a piece of paper, sketch a graph showing C (1) (with C on the y-axis and / on the x-axis). Then use your graph to evaluate each of the following: (Write DNE for undefined.) C (2.5) = [ Select ] C (4) [ Select ] lim C (1) = [ Select ] x-3.1 lim C (1) = [ Select ] x-4 lim C (1) = [ Select ] x-4+ lim C (1) = [ Select ] x-4