Let us assume that the given speed is in miles per hour.
A race car is driven by a professional driver at 99 mph.
We have to find the speed in kilometer per hour and kilometer per minutes
As 1 mile = 1.61 km
So, 99 miles = kmph
1 km per hour = 0.0166 km per minute
So, 159.39 kmph = km per minute
Hence, The speed is equivalent to 159.39 kilometers /hour, or 2.645 kilometers/minutes .
Answer: Check the attached
Step-by-step explanation:
9 days ago, the mold covered an area of .
Today (after 9 days), the mold covers an area of .
<em>What is the increase in area?</em> It went from 3 to 9. So the increase is .
Now, we need to find <em>rate of change</em>. It means to find how much the area increased every day over the past 9 days. We simply divide <em>the increase (6)</em> by the <em>total number of days (9)</em> to find the rate per day. So we have,
ANSWER: Change of Rate = per day