Write an equation for the function graphed below. The y intercept is at (0,0.5) 5 4 3 2 5 -4 -3 -2 -1 1 2 3 4 5 7 -2 -3 -4 -5+ y = The count in a bacteria culture was 900 after 15 minutes and 1700 after 35 minutes. Assuming the count grows exponentially, What was the initial size of the culture? Find the doubling period. Find the population after 100 minutes. When will the population reach 11000.