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 oatsAnswer: C
Mathematics
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Solve the problem.A manufacturer contracts to mint coins for the federal government. How much variation dr in the radius of the coins can be tolerated if the coins are to weigh within 1/10 of their ideal weight? Assume that the thickness does not vary.
A. 0.10% B. 10% C. 5.0% D. 0.050%
Mathematics
Use common or natural logarithms to solve the exponential equation symbolically.4(2x - 1) = 13
A. x = 
+ 
B. x = - 
- 2
C. x = 
- 
D. x = 
+ 1
Mathematics
Find 
. Express the answer in standard form.z1 = 20(cos 240° + i sin 240°)z2 = 4(cos 30° + i sin 30°)
A. - 
+ - 
i
B. - 
- 
i
C. - 
- 
i
D. - 
- 
i
Mathematics
Sketch the graph of the given function.f(x) = 4(3)x
A. 
B. 
C. 
D. 
Mathematics