38, 47, 48, 52, 55, 59, 61, 72 average
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Answer:
It takes 4.75 hours to travel 247 miles.
Step-by-step explanation:
This question is solved by proportions, using a rule of three.
A car travels at an average speed of 52 miles per hour.
This means that in 1 hour, the car travels 52 miles. How many hours for it to travel 247 miles?
1 h - 52 m
x h - 247 m
Applying cross multiplication
It takes 4.75 hours to travel 247 miles.
For this case, we find the equation of the line of the form:
Where:
So, we have:
We substitute one of the points:
Thus, the equation is:
Now, we substitute a point belonging to the region to determine the sign.
(
-3 is less than 0.
Then, the inequality is:
As the border of the region is dotted, then it remains ">."
Answer: