1.) There are 6500 people in a certain area. The area is growing at a rate of 3.5%. Use the formula A=Pe^rt to calculate the time it would take for the area to reach 11500 people. Calculate the solution for t to the nearest tenth using logarithms.

2.) There are 9 grams of Strontium-90. Strontium-90 has a half-life of 28.8 years.

Use the formula A=P(1/2)^t/h to calculate the time it would take for the given mass to degrade down to 0.41 grams. Calculate the solution for t to the nearest tenth using logarithms.