Another submarine's descent can be represented as y= -240x, where y is the elevation and x is time in hours. How long will it take this submarine to make the descent?

Which is the correct excel formula for the 80th percentile of a distribution that is n(475, 33)? =norm.dist(80,475,33,1) =norm.inv(0.80,475,33) =norm.s.inv((80-475)/33)?

Which of the following contains a variable?

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.