Answer:
The expression can be rewritten in 
form as following:
⇒ 
where 
Step-by-step explanation:
Given expression:
To rewrite the expression in the form of .
Solution:
By property of exponents :
<em>So, we can apply this property to the given expression.</em>
We have:
⇒
The above expression is in the form of where
The unit rate of the dog is 12.5 rolls per minute. So to get your answer multiply this by 6 and you will have a total of 75 rolls.
Answer:
2x-37
Step-by-step explanation:
To find the average speed, we need to find his speed during 3/4 of the trip and then the 52.5 miles.
So you know that 52.5 is 1/4 of his total trip. That means if we multiply that by 3, that's how many miles he traveled in 2.5hrs. (157.5)
To calculate speed, divide distance by time.
For 3/4 of his trip (157.5), it took him 2.5 hours.
157.5/2.5 = 63mph
For the remaining 52.5 miles, it took him an hour.
52.5/1 = 52.5mph
Now average those two speeds to get the average speed for the whole trip.
(63+52.5)/2= 57.6mph
