Answer:
8.08 %
Step-by-step explanation:
Let us denote :
score X follows a normal distribution with mean
and standard deviation 
Step 2
The probability that someone scored 21.9 or less is :





Answer : 
Answer:
x<3
Step-by-step explanation:
4x-7<5
4x<5+7
4x<12
x<3
One hundred more than 792 = 792 + 100
792 + 100 = 892
892 is your answer
hope this helps