2more than the quantity 3 times a number is at most 11

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

What would the rule be for the reflection of y=-3

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.