Eileen has a greenhouse and is growing orchids. the table shows the average number of orchids that bloomed over a period of four months:

month 1 2 3 4
orchids 11 12.4 13.8 15.2

did the number of orchids increase linearly or exponentially?
linearly, because the table shows that the orchids increased by the same amount each month
linearly, because the table shows a constant percentage increase in orchids each month
exponentially, because the table shows that the orchids increased by the same amount each month
exponentially, because the table shows a constant percentage increase in orchids each month