I need help with this answer. My teacher told me I need to define the variable and give a general inequality, then solve for m.

You have a budget of no more than $50 per week for gas, the current price of gas is $3 per gallon. I need an inequality statement using the highway miles per gallon that can be used to solve for the maximum number of highway miles traveled (m) to stay within budget. Subaru gets 25 highway mpg