(worth 5pts) ana was washing dishes at the end of her shift at a restaurant. she washed 30 plates from 7: 30 to 7: 35. when she finishes washing all the plates, her shift will end. (a) if she started washing plates at 7: 15 and ended at 7: 38, estimate how many plates she washed in total. explain your reasoning. (b) write an equation to represent how many plates ana has left to wash at a particular time after her start at 7: 15. explain your reasoning.