Donna De Paul is raising money for the homeless She discovers that each church group requires 2 hours of letter writing and 1 hour of follow up while for each labor union she needs 2 hours of letter writing and 3 hours of follow up Donna can raise 125 from each church group and 175 from each union local and she has a maximum of 20 hours of letter writing and a maximum of 12 hours of follow up available per month Determine the most profitable mixture of groups she should contact and the most money she can raise in a month Let x be the number of church groups and let x be the number of labor unions What is the objective function z x x Do not include the symbol in your answers