Analyze and solve. (Show your solutions and box the final answers) 41-42. When a number x is added to the data set 4, 8. 20, 25, 32, the new mean is 15. Find the value of x. 43-44. Killua's scores on his first four History tests were 86, BB, 89 and 92. To get an "A" in the class, he needs to have an average of 90. What score must he make on the fifth test to get an 45-50. Find the mean, median and mode of the math quiz scores 18, 12, 22, 24, 20, 14. 10, 26, 14, 18, 22, 12, 14, 18, 24, 16, 22 and 18