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. 0 sacks of soybeans and 2 sacks of oats
B. 
sacks of soybeans and 
sacks of oats
C.
| 2 sacks of soybeans and 0 sacks of oats |
D.
sacks of soybeans and 
sacks of oatsAnswer: C
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Reverse the order of integration and then evaluate the integral.
A. 
(e - 1)
B. 
(e - 1)
C. 
(2e - 1)
D. 
(2e - 1)
Find the LCD for the rational expression.
, 
, 
A. 3(3x - 1)(x + 2) B. 3(3x - 1) C. 3(3x - 1)(3x + 6) D. (3x - 1)(3x + 6)
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. An insurance company is willing to insure the concert for $150,000 against rain for a premium of $30,000. If he buys this policy, what are his expected earnings from the concert?
A. $180,000 B. $300,000 C. $270,000 D. $239,400
Provide an appropriate response.Identify the greatest common factor (GCF) of 2x2 + 4x.
A. 2 B. 4x C. x D. 2x