For the graph below, what should the domain be so that the function is at least 600? (1 point)

graph of y equals minus 2 times the square of x plus 40 times x plus 600

0 ≤ x ≤ 20
−10 ≤ x ≤ 30
x ≥ 0
all real numbers

1. suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation of 6. a. label the curve: show the mean and the value at each standard deviation: b. if angelica scored a 76 on the test, what is her z-score? (draw her score on the curve above and label) c. what percent of students did angelica score higher than? how can you tell? d. if 185 students took the test, how many students scored higher than angelica?