Raj wants to take yoga classes. there are two yoga studios that have different membership plans. the first studio charges a fixed amount of $70\$70 $70 dollar sign, 70 per month, and you can take as many classes as you want for no additional charge. the second studio charges a smaller initial fee plus an additional fee for each class taken. the monthly price (in dollars) of the second studio as a function of the number of classes taken is given by the following table of values: