What was the area covered by the oil slick when Lindsay first saw it (at t = 0)? In the remaining questions, express the rate of growth of the oil slick in square meters per hour.

a. At what average rate did the oil slick grow during the first 2 hours after Lindsay’s initial observation?

b. At what average rate did the oil slick grow during the first half-hour after Lindsay’s initial observation?

c. At what average rate did the oil slick grow during the 15 minutes before Lindsay’s initial observation?

At what rate was the oil slick growing at the instant when Lindsay first saw it?