Solve the problem.If a person puts 1 cent in a piggy bank on the first day, 2 cents on the second day, 3 cents on the third day, and so forth, how much money will be in the bank after 40 days?
A. $16.40
B. $8.20
C. $0.40
D. $4.10
Answer: B
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Find the curvature of the space curve.r(t) = ti + (sinh t)j + (cosh t)k
A. ? = cosh2 t
B. ? = sinh2 t
C. ? = 
D. ? = 
A certain animal population exhibits logistic population growth. The carrying capacity for this population is 500 individuals, and the r value for this type of animal is 0.07.
A. Write the equation of change for logistic growth for this population.B: Make a graph of 
versusN. Use population sizes up to 600.
C: For what values of N would the population be expected to increase?D: For what values of N would the population be expected to decrease?
What will be an ideal response?
The function f(x) changes value when x changes from x0 to x0 + dx. Find the approximation error 
. Round your answer, if appropriate.f(x) = x3, x0 = 2, dx = 0.04
A. 0.004832 B. 0.009664 C. 0.019328 D. 0.014496
A plane headed due south is traveling with an airspeed of 180 miles per hour. The wind currents are moving with constant speed in the direction 30°. If the ground speed of the plane is 90 miles per hour, what is its true course? ? True course: __________°
Fill in the blank(s) with the appropriate word(s).