On a standardized exam, the scores are normally distributed with a mean of 300 and a standard deviation of 20. Find the z-score of a person who scored 270 on the exam.

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

8 < i think

hope this !

yes i do see that. i say this because i am doing my very best in high school so i can get a scholarship and credits.  

(f+g)(x) = 3^x+10x+4x-2

      =3^x +14x-2

choice b