Section 3.1 64 (a - c) [ATTACH=full]656[/ATTACH] Let me see. For part (a), replace t with 0 and simplify. Yes? For part (b), subtract 2000 from 5715 to find the value of t in years. Then plug and chug. Yes? For part (c), sketch the graph of the function from t = 0 years to t = 10,000 years. Yes?