7+5+9+5+12=38
38/5=7.6
7.6=mean
hope this helps
Answer:
D
Step-by-step explanation:
First, remove parenthesis:
8(x + 30) = 8*x + 8*30 = 8x + 240
Then, add the 5 at the end:
8x + 240 + 5 = 8x + 245
3
Divide by