11. Compute the limit of f as x approaches negative infinity given f(x) =

c) 0

d) 1

e) none of these

12. A straight wire 60 cm long is bent into the shape of an L. What is the shortest possible distance between the two ends of the bent wire?

a) 30 cm

b) cm

c) cm

d) cm

e) none of these

13. A water bucket containing 10 gal of water develops a leak at time t=0, and the volume of water in the bucket t seconds later is given by

until the bucket is empty at time t=100 seconds. At what rate is water leaking from the bucket after exactly 1 second has passed?

e) none of these

14. The tangent line to the graph of the ellipse with equation 9x² + 4y² = 40 at the point P(2,1) is

a) 2x + y = 5

b) 9x - 2y = 16

c) 9x - 4y = 14

d) 9x + 2y = 20

e) none of the above

15. What can one say about the local extrema of the function

a) the local maximum of f is greater than the local minimum of f,

b) the local maximum of f is at the same time the local minimum of f,

c) the local minimum of f is greater than the local maximum of f,

d) the function f does not have any local extrema,

e) none of the above.