A battery with 20 percent of its full capacity is connected to a charger. Every minute that passes, an additional 5, percent of its capacity is charged. Graph the relationship between the battery's capacity (in \%%percent charged) and time (in minutes).

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?