To raise money for a class trip, rana’s class sells granola bars. on the first day, 20 bars are sold. on the following days, the number of granola bars sold increases by 5 bars per day. rana’s class wants to raise $650. how many granola bars in total are sold by the end of the 6th day? each granola bars costs $1. on which day of sales will the students reach their goal?