Help I need help ASAP my brain can’t think and I want to finish this thing but I can’t remember the process and I can’t find my notes so need help.

Two numbers have a sum of -19. one number is x. what expression represents the other number?

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.