PLEASE THIS WAS DUE 2 WEEKS AGO I NEED HELP

What could explain what happened when the time was equal to 120 minutes

Consider an example of a deck of 52 cards: example set of 52 playing cards: 13 of each suit clubs, diamonds, hearts, and spades ace 2 3 4 5 6 7 8 9 10 jack queen king clubs diamonds hearts spades what is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.

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