The mass of a growing cyst at clock time t is given by m = .07 * t³, where m is mass in grams and t is clock time in months.

• At what average rate is the mass changing between clock times t = 16.1 and t = 16.2 months? 
• At what average rate is the mass changing between clock times t = 16.1 and t = 16.11 months? 
• At what average rate is the mass changing between clock times t = 16.1 and t = 16.101 months? 
• What do you estimate is the rate at which mass is changing at clock time t = 16.1 months?

The rate at which the mass of the cyst changes is given by Rate = .01 * t², where Rate is rate of change in grams per month and t is clock time in months.  How much do you think mass will change between t = 16.1 and t = 32.2 months?