A family started their vacation with a full tank of gasoline. The car's gas tank hold 18 gallons. They used another full tank of gas while traveling a total of 775 miles. What is the ratio of gallons of gasoline used to the total number of miles traveled?

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?