We have been given the expression

We have to write this expression in the form 
In order to write the given expression in this form, we can use some exponent property.

On using the property (1), we have

Now, on using the property (2), we get

Therefore, the simplified form of the given expression is

Try this option:
1 meter=1000 mm; 1 hour=60 min. From another side: 1 mm=0.001 m. and 1 min=1/60 h.
Using this rule:
620 mm/h=0.06*620 m/h=37.2 meters per hour.
answer: 0.06
3x+8
i am pretty sure about that
The worng answer is [b]
hope this helps you
have a great day
No, this is not a random group of students. Because Nina asked her friends if they liked the movie. For her to ask a random group of people, she would have to go and ask people that she did not know.