1. A mold culture is growing on a gigantic piece of bread. The culture starts in the center of the bread and remains approximately circular. The diameter of the culture grows at a rate proportional to the square of the diameter. If the diameter was 1mm at 8am and 2mm at noon find the size of the culture at 2pm.

2. If the acceleration of an object is given by dv/dt = v/7 , find the position function s(t) if

v(0) = 1 and s(0) = 2