Answer:
D. 95
Step-by-step explanation:
The average is also known as the mean. To find the mean, you need to add all the values, then divide them by the number of terms:
1 2 3
1+2+3
6/3=2
The mean for the example would be 2. Now, using your values, you can use the options to see which one gives you an average of 90:
A.) 85
[tex]80+100+85+85=350\\\frac{350}{4} =87.5[/tex]
B.) 90
[tex]80+100+85+90=355\\\frac{355}{4}= 88.75[/tex]
C.) 92
[tex]80+100+85+92=357\\\frac{357}{4} =89.25[/tex]
D.) 95
[tex]80+100+85+95=360\\\frac{360}{4} =90[/tex]
The next score on the quiz needs to be 90 for the mean to be 90.
