The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation of days. a. Find the probability of a pregnancy lasting 15 days or longer. b. If the length of pregnancy is in the lowest ​2%, then the baby is premature. Find the length that separates premature babies from those who are not premature.

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.