Construct an equation or an inequality that model a given context. Modeling expressions can be quadratic, rational, or exponential.

Problem

Nick is doing some math exercises on a website called Khon Academy. In Khon Academy, you have to get at least 70, percent of the problems in an exercise right in order to gain proficiency.
So far, Nick answered one question, and he didn't get it right. Suppose he answers 75, percent of the following q questions correctly and gains proficiency in the exercise.
Write an inequality in terms of q that models the situation.