To find out how long it will take Mariah to travel 36.75 miles, we can use the given function \( y = 8.75x \).
Here, \( y \) is the distance and \( x \) is the time in hours. We can set \( y \) to 36.75 miles and solve for \( x \):
\[ 36.75 = 8.75x \]
To solve for \( x \), divide both sides by 8.75:
\[ x = \frac{36.75}{8.75} \]
Calculating this gives:
\[ x = 4.2 \]
So, it will take Mariah 4.2 hours to travel 36.75 miles. The correct response is:
4.2 hours.