Mark started selling snack in the nearly school. In one day he spends Php 200 for rent and Php 25 for each snack item per he prepares. His express in a
single day can be expressed as the function c (x) = 25 x + 200, where x is the number of item and c (x) is his daily expresses in pesos. How much his expenses if prepares 100 snack item? 150 item?