Which is the best estimate of 54 times 68

Plz a. s. a. p.the table shows the number of male and female contestants who did not win a prize. what is the probability that a randomly selected contestant won a prize, given that the contestant was female? write the probability as a percent. round to the neares tenth, if needed.

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.