Calculus AB Assignment Practice with the Definite Integral as Accumulated Change 1. If r() is the rate of growth of a certain tree in feet per year where / is in years, what does the expression 3) r(1)di represent? 2. A population of rabbits starts off at time / - 0 with 225 rabbits and increases at a rate of (() rabbits per month, where / is in months. A. What does the expression 24 (36 r(1)di represent? B. What does the expression 225 + J r(/)dr represent? C. Suppose you're told that [" r(/)di - 4.25. How many rabbits are there in the population after 2 years