The weight of infants at a New York hospital has a mean of 7.5 pounds and a standard deviation of 0.95 pounds. Weights are approximately normally distributed. What is the probability that a randomly selected infant will have a weight between 6.8 pounds and 7.9 pounds? Round to four decimal places.

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?