please solve this for me i can't understand it

125 or 105 = Homework 1. A 40 g sample of a Sodium isotope has a half-life of 15 hours. (0, 40) = (0.40) a) How much Sodium is remaining after 1 full day? 3 = Indic b) How long until there are only 5 grams remaining? IS = t Dete 2. A population of rabbits doubles every 60 days. You bought 2 rabbits today! the a) Approximately how many rabbits will there be after 1 year? The b) When will the rabbit population reach 64? 1. 3. An antique car, worth $50 000, appreciates in value every 8 years. If, after 40 years, the car is worth $100567.86, at what rate does it appreciate? 2. 4. During an experiment, 0.5 mg of bacteria is placed in a Petri dish. After 24 hours, there is 128 mg 3. of bacteria in the Petri dish. How long does it take for the bacteria to double? 5. A diamond bracelet worth $100 000 appreciates in value at a rate of 20% every 15 years. When will the value of the bracelet be approximately triple its current value? 1 . Answers: Ia) 13.20 g b) 45 hours 2a) 136 rabbits b) 300 days 2