Matthew wants to save more than $30 this month. He has already saved $10. He plans to save $3 every day for the rest of the month. How many days does he need to save money to reach his goal?
In this problem, x represents the number of days Matthew needs to save money. The expression 3x + 10 > 30 represents the total amount of money John will have saved after x days, and the inequality means that he wants this amount to be greater than $30.
