I started an experiment with 500 cells of bacteria in a petri dish. After 6 hours, my bacteria population has increased to 2200. Assume that the population grows at a rate proportional to its size. (a) Find the number of bacteria after 10 hours.

The height of a triangle is increasing at a rate of 2 [cm/min] and its area at a rate of 2 [cm² / min]. Calculate the rate that the base is changing at when the height of the triangle measures 4 [cm] and the area measures 2 cm² ]?

The doubling period of a baterial population is 1010 minutes. At time t=80t=80 minutes, the baterial population was 70000.What was the initial population at time t=0t=0?   Find the size of the baterial population after 4 hours.

A tank contains 7070 kg of salt and 10001000 L of water. A solution of a concentration 0.035 kg of salt per liter enters a tank at the rate 8 L/min. The solution is mixed and drains from the tank at the same rate.(a) What is the concentration of our solution in the tank initially?(b) Find the amount of salt in the tank after 2.5 hours.(c) Find the concentration of salt in the solution in the tank as time approaches infinity.