Car A and Car B are stopped at a red light on a hill. Car A drives 137 ft downhill. Car B drives 172 ft uphill. Represent these situations as signed numbers. * A) Car A -137, Car B 172
B) Car A 137, Car B 172
C) Car A -137, Car B -172
D) Car A 137, Car B - 172

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?