Will mark brainliest evaluate each expression for g = -7 and h = 3 and match it to its value values: a. -2 b.: 4 c. 46 d: 10 e: -10 f: -21 expressions: a: g + h b: g - h c: h - g d: gh e: g + h ^2 f: g^2 - h

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?