A biologist is tracking the growth of a certain species of plant. The height , in centimeters, of the plant is modeled by the formula , where is the number of weeks since the plant was planted. What does the number represent in this context?
The increase in height, in centimeters, for each week that passes
The time, in weeks, it takes for the plant to grow to centimeters
The initial height, in centimeters, of the plant when it was planted
The total height, in centimeters, of the plant after weeks
