Find the area of the circle. Use 3.14 or 
for ? as indicated.Use 3.14 for ?.
A. 131.88 cm2
B. 346.185 cm2
C. 65.94 cm2
D. 1,384.74 cm2
Answer: B
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Find all the first order partial derivatives for the following function.f(x, y) = x3 - 4x2y - 3xy3
A. 
= 3x2; 
= -4x2 - 9xy2
B. 
= 3x2 - 8xy - 3y3; 
= -4x2 - 9xy2
C. 
= x2 - 4xy - 3y3; 
= -4x2 - 3xy2
D. 
= 3x2 + 2xy - 3y3; 
= -4x2 + 3xy2
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 on, how much money will be in the bank after 60 days?
A. $0.60 B. $9.15 C. $18.30 D. $36.60
Find the absolute maximum and minimum values of the function on the given curve.Function: 
curve: 
(Use the parametric equations 
A. Absolute maximum: 10 at 
absolute minimum: - 10 at 
B. Absolute maximum: 10 at 
absolute minimum: - 20 at 
C. Absolute maximum: 20 at 
absolute minimum: - 20 at 
D. Absolute maximum: 20 at 
absolute minimum: - 10 at 
Solve the problem.The population growth of an animal species is described by F(t) = 200 + 30 log3 (2t + 1), where t is measured in months. Find the population of this species in an area 4 month(s) after the species is introduced.
A. 140 B. 470 C. 255 D. 260