Find the area of the figure using determinants.
A. 31.5
B. 30.0
C. 29.75
D. 31.25
Answer: B
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Solve the problem.The graph below shows the first derivative of a function y = f(x). Select a possible graph f that passes through the point P. f'
A. 
B. 
C. 
D. 
Find the particular solution to the given differential equation that satisfies the given conditions.D2y - 9 Dy + 14y = 0; Dy = 0 and y = 2 when x = 0
A. y = - 
e7x + 
e2x
B. y = - 
e7x - 
e2x
C. y = 
e7x + 
e2x
D. y = 
e7x - 
e2x
Write a chain rule formula for the following derivative.
for u = f(r, s, t); r = g(y), s = h(z), t = k(x, z)
A. 
= 
B. 
= 
C. 
= 0
D. 
= 
Use graphical methods to solve the linear programming problem.Suppose an horse 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.
| 2 sacks of soybeans and 0 sacks of oats |
B.
sacks of soybeans and 
sacks of oatsC. 0 sacks of soybeans and 2 sacks of oats
D.
sacks of soybeans and 
sacks of oats