Answer:
<em>8.5</em>
Step-by-step explanation:
To find mean, we simply take the average of all the numbers in the data set, and divide in by the amount of values!

68 ÷ 8 = 8.5!
Answer the answer is B) 990
Answer:
c
Step-by-step explanation:
Answer:
S=3 R=1
Step-by-step explanation:
3x1+3=6
1+(3x3)=10
3x3=9
9+1=10.
X:2+(105-275:11):4=28
X:2+(105-25):4=28
X:2+80:4=28
X:2+20=28
X:2=28-20
X:2=8
X=8×2
X=16