carly is raising money for thehomeless, and discovers each church group requires 2 hr of letter writing and 1 hr offollow-up calls, while each labor union needs 2 hr of letter writing and 3 hr of follow-up. She can raise $150 from each church group and $200 from each union. She has a maximum of 16 hours of letter writing and 16 hours of follow-up available each month. Determine the most profitable mixture of groups she should contact and the most money she can raise in a month.

She should contact _________churchgroup(s) and _______laborunion(s), to obtain $__________ in donations.