Jose has saved $75 to take tutoring classes. He must pay a registration fee of $15 and then an additional $6 for each class. Write an equation to determine the number of classes that Jose can afford.

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?