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Solve the all parts of given problem:

Problem: Water is poured into a container that has a leak. The mass m of the water is given as a function of time t by m = 5.5t0.8 - 3.3t + 16, with t ? 0, m in grams, and t in seconds,

Part I: At what time is the water mass greatest?

Part II: what is that greatest mass?

Part III: What is the rate of mass change at t = 2.0 s?

Part IV: What is the rate of mass change at t = 4.5 s?

Please show me how work it out above problem.

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