Marissa has $800 in her checking account on July 1. She is paid w dollars per week from her part-time job each week. She will need to spend the following amounts of money during the month:  g dollars per day for gasoline  f dollars per day for food  c dollars every two weeks for new clothing  $350 once per month for rent Write an equation that Marissa can use to determine how much money she will have in her account on July 30. Let A represent the amount of money she will have on July 30.