Solve the problem.A tumor is approximately spherical in shape. If the radius of the tumor changes from 
to 
, find the approximate change in volume.
A. 101 mm3
B. 268 mm3
C. 1700 mm3
D. 402 mm3
Answer: D
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Find the area of the shaded region.
A. 
B. 
C. 
D. 
Find a Cartesian equation for the line whose polar equation is given.r cos
= 4
A. y = x + 4
B. y = x - 8
C. y = 
x - 8
D. y = x + 4
Use De Morgan's laws to write the negation of the statement.Denim is out and linen is in.
A. Denim and linen are in. B. Denim is not out or linen is not in. C. Denim is in and linen is out. D. Denim is not out and linen is out.
Use the two steps for solving a linear programming problem to 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 12 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 alfalfa costs $11 and contains 30 lb of protein, 8 lb of fat, and 3 lb of mineral ash. How many sacks of each should be used to satisfy the minimum requirements at minimum cost?
A. 
sack of soybeans and 
sack of alfalfa
B. 
sacks of soybeans and 
sacks of alfalfa
C. 2 sacks of soybeans and 0 sacks of alfalfa
D. 0 sacks of soybeans and 2 sacks of alfalfa