No matter how many hours a person gets tutored for, there's always the $20 as a baseline for study materials. So, the $20 MUST be included in our equation, which looks like this for now:
T(h) = 20
Every hour, $40 is added onto the expense.
For example, if a person was tutored for two hours, it would cost them $20 + 2(40) = $100.
When used as a diacritic mark, the term dot is usually reserved for the interpunct, or to the glyphs 'combining dot above' and 'combining dot below' which may be combined with some letters of the extended Latin alphabets in use in Central European languages and Vietnamese
