Answer:
The most significant number of trips Edwin can take up the mountain and still pay less than Rhea would be 63.
What is inequality?
Inequality is the relation that makes a non-equal comparison between two given functions.
Two siblings Edwin and Rhea are both going skiing but choose different payment plans.
Edwin's plan charges $45 for rentals and $5.25 per lift up the mountain.
Rhea's plan was a bundle where her entire day cost $108.
An inequality that models the number of trips, n, up the mountain for which Edwin will pay more than Rhea.
45 + 5.25n > 108
Subtract 45 on both sides
-45 + 45 + 5.25n > 108 -45
5.25n > 63
Divide both sides by 5.25
n > 12
Also,
5.25 x 12
= 63