Sea turtles can lay 50 to 200 eggs in a nest. Some eggs get
destroyed or eaten by other animals. The
n young turtles that hatch face many challenges
as they head to the ocean. They may have to
crawl over steep slopes, through seaweed,
or around obstacles. Raccoons, foxes, crabs,
birds, fish, and sharks may eat them. Given the
challenges and the data in the Math Toolbox,
write an expression and use it to calculate the
percent hatched. Use the percent to roughly
estimate the number of sea turtles from a nest
of 100 in Naples that reach the ocean safely.
Express your answer as a percentage.

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".