The height of a plant over time is shown in the following table. Using a logarithmic model, what is the best estimate for the age of the plant when it is 19 inches tall? Plant Height t , time in months h , height in inches 1 18 2 18 point 2 1 3 18 point 3 3 4 18 point 4 2 5 18 point 4 8 6 18 point 5 4