Evaluate the integral.
A. - 
+ 
tan-1 
+ C
B. 
+ 4tan-1
+ C
C. - 
+ 
ln
+ C
D. - 
+ 
tan-1
+ C
Answer: D
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Solve the problem.The polynomial 
gives the predicted sales volume of a company, in millions of items, where x is the number of years from now. Determine the predicted sales 16 years from now. Round your answer to two decimals, if necessary.
A. 252.08 million B. 409.62 million C. 300.38 million D. 359.63 million
Find the value.If F(x, y) = tan-1 
, find Fx(-5, 6) and Fy(-5, 6).
A. Fx(-5, 6) = - 
, Fy(-5, 6) = - 
B. Fx(-5, 6) = - 
, Fy(-5, 6) = - 
C. Fx(-5, 6) = - 
, Fy(-5, 6) = 
D. Fx(-5, 6) = - 
, Fy(-5, 6) = - 
Find the exact circular function value.tan 
A. 1 B. undefined C. 0 D. -1
Solve the problem.Suppose an animal feed to be mixed from soybean meal and oats must contain at least 100 lb of protein, 20 lb of fat, and 9 lb of mineral ash. Each 100-lb sack of soybean meal costs $20 and contains 50 lb of protein, 10 lb of fat, and 8 lb of mineral ash. Each 100-lb sack of oats costs $10 and contains 20 lb of protein, 5 lb of fat, and 1 lb of mineral ash. How many sacks of each should be used to satisfy the minimum requirements at minimum cost?
A. 
sacks of soybeans and 
sacks of oats
B. 0 sacks of soybeans and 2 sacks of oats
C.
| 2 sacks of soybeans and 0 sacks of oats |
D.
sacks of soybeans and 
sacks of oats