1 On a standardized test, the distribution of scores is normal, the mean of the scores is 75, and the standard deviation is 5.8. If a student scored 83, the student’s score ranks

(1) below the 75th percentile
(2) between the 75th percentile and the 84th percentile
(3) between the 84th percentile and the 97th percentile
(4) above the 97th percentile

1         2         3         4        

1         2         3         4        

1         2         3         4        

4 What is the equation of a parabola that goes through points (0,1), (–1,6), and (2,3)?

(1) y = x2 + 1        (3) y = x2 –  3x + 1
(2) y = 2x2 + 1      (4) y = 2x2 – 3x + 1

1         2         3         4        

1         2         3         4