Pl heppp ppplll mrs. martinez is putting gas in her car. if each gallon costs $3.62, how much did it cost her to put in 14 gallons of gas? a. $50.68 b. $17.62 c. $54.30 d. $10.38

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?