Solve the problem.How many different three-digit numbers can be written using digits from the set {3, 4, 5, 6, 7} without any repeating digits?
A. 120
B. 20
C. 10
D. 60
Answer: D
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Find all the first order partial derivatives for the following function.f(x, y) = sin2 (8xy2 - y)
A. 
= 16y2sin (8xy2 - y) cos (8xy2 - y); 
= 2sin (8xy2 - y) cos (8xy2 - y)
B. 
= 2sin (8xy2 - y) cos (8xy2 - y); 
= (32x - 2) sin (8xy2 - y) cos (8xy2 - y)
C. 
= 16y2sin (8xy2 - y) cos (8xy2 - y); 
= (32xy - 2) sin (8xy2 - y) cos (8xy2 - y)
D. 
= 2sin (8xy2 - y) cos (8xy2 - y); 
= 2sin(8xy2 - y) cos(8xy2 - y)
Solve the problem.
Sarah Fields wants to borrow $133,000 at 4% to buy a house. How much would she save in total costs by going with a 15-year loan over a 25-year loan?
A. $36,176 B. $33,516 C. $37,373 D. $28,196
Use a graphing utility to graph the function and then answer the question.John owns a hotdog stand. He has found that his profit is represented by the equation 
with P being profits and x the number of hotdogs. How many hotdogs must he sell to earn the most profit?
A. 23 hotdogs B. 46 hotdogs C. 28 hotdogs D. 27 hotdogs
Solve the equation. Express radicals in simplest form.(4z - 1)2 = 
A. 
B. 
C. {4, -2}
D. 