Directions: Show your complete solution then box your final answer for each problem. 1. The number of insects in a colony increase at the rate of 75% every month. If there are now 1,000 insects in the colony, about how many were in the colony after 2 years?

2. The half-life of radium-226 is 1,590 years. If a sample has a mass of 150 mg, find the mass that will remain after 1,000 years. 1

3. Evaluate the logarithm: logs 25+ log: 1000


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