7th grade math
posted by Daniel .
Each person has taken four tests and has one more test to take.Find the score that each person must make to change the mean or median as shown
Barry has scores of 93,84,86,and75.He wants to raise the mean to 86

Mean = sum of scores/number of scores
(93+84+86+75+x)/5 = 86
Solve for x. 
x14=3 one step equation

baryy has scores of 93,84,86,and 75. he wants to raise the mean to 86

Barry has scores of 93 84 86 and 75. He wants to raise the mean to 86.