A tank initially contains 200 lb of salt dissolved in 500 gal of water. Saltwater containing 4 lb of salt per gal enters the tank at the rate of 5 gal per min. The mixture (kept uniform by stirring) is removed at the same rate. How many pounds of salt are in the tank after 2 hours?
What will be an ideal response?
1457.85 lb
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Determine whether the improper integral converges or diverges.
A. Diverges B. Converges
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = (4x - 2y)5
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c ? 0
B. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
D. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
Write in terms of the cofunction of a complementary angle.cot 
A. cot 
B. tan 
C. tan 
D. cot 
Provide an appropriate response.Find the future value of an annuity due consisting of payments of $100 paid at the beginning of each quarter for five years at the rate of 5% compounded quarterly.
Fill in the blank(s) with the appropriate word(s).