What number is represented in the expanded notation below? 90,000,000 + 500,000 + 2,000 + 80 + 4 + 0.1 + 0.09

Im literally having a mental breakdown

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)