Answer:
188 miles
Explanation:
In order to find the number of miles Effie traveled, we can set up an equation based on the given information.
The daily cost of renting a car is $30 plus $0.50 per mile. So, for Effie's rental, the cost can be expressed as:
Cost = $30 (daily rental fee) + $0.50x (cost per mile)
where x is the number of miles traveled)
Effie paid $124 for the day's rental, so we can write the equation:

Now, we need to solve for x (the number of miles):
Subtract $30 from both sides of the equation:


Now, to isolate x, divide both sides of the equation by $0.50:


So, Effie traveled 188 miles during her rental.