The taxi company charges $.20 per 1/10 of a mile plus a drop off fee of $3.50. write and explicit formula to model the cost c of taking a taxi cab for a distance of n miles.

The diameter of a bacteria colony that doubles every hour is represented by the graph below. what is the diameter of the bacteria after 8 hours? graph of a curve passing through the points zero comma 1, one comma two, two comma four, and three comma eight