Find all the first order partial derivatives for the following function.f(x, y) = 
A. 
= - 
; 
= - 
B. 
= 
; 
= 
C. 
= - 
; 
= - 
D. 
= - 
; 
= - 
Answer: A
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Solve the problem.When exposed to ethylene gas, green bananas will ripen at an accelerated rate. The number of days for ripening becomes shorter for longer exposure times. Assume that the table below gives average ripening times of bananas for several different ethylene exposure times:
Plot the data and then find a line approximating the data. With the aid of this line, find the limit of the average ripening time as the exposure time to ethylene approaches 0. Round your answer to the nearest tenth.
A. 
2.6 days
B. 
0.1 day
C. 
37.5 minutes
D. 
5.8 days
Solve. If necessary, round to the nearest tenth.A flagpole casts a shadow of 20 feet. Nearby, a 5-foot tree casts a shadow of 3 feet. What is the height of the flagpole?
A. 0.8 ft B. 300 ft C. 33.3 ft D. 12 ft
Solve the problem.What is the usual dose of PharmCor1000 for children as given by the prescription label below? 
A. 72 mg per kg per day in 3 divided doses B. 120 mg 3 times per day C. 24 mg per kg per day in 3 divided doses D. 360 mg 3 times per day
Determine if the given value is a solution to the equation. Answer Yes or No.3(x - 1) - x = 4x + 6; x = -4
A. Yes B. No