As mentioned mean is b . you multiply it with 8 so the data would 8b.
Answer: well I'm sorry I can't help that much but 300÷70(per hour)=4.28571428571 (Yes I did the math in my head) but it would be an estimate of 4 or 5 minutes. If I helped that's the least I can do. Your welcome! Anytime!!
Step-by-step explanation:
-4+3x= 2x +3x +3
-4-3= 2x + 3x -3x
-7 =2x
X= -7/2