Johnson City Cooperage manufactures 30-gallon and 55-gallon fiber drums. Each 30-gallon drum takes 30 minutes to make, each 55-gallon drum takes 40 minutes to make, and the company has at most 10,000 minutes available each week. Also, workplace limitations and product demand indicate that the number of 55-gallon drums produced plus half the number of 30-gallon drums produced should be at least 160, and the number of 30-gallon drums should be at least twice the number of 55-gallon drums. If Johnson City Cooperage's manufacturing costs are $4.4 for each 30-gallon drum and $6.9 for each 55-gallon drum, how many of each drum should be made each week to satisfy the constraints at minimum cost? Find the minimum cost.
?
A. Minimum cost of $1,243.50 when 165 30 - gallon drums and 75 55 - gallon drums are produced.
B. Minimum cost of $1,256.00 when 160 30 - gallon drums and 80 55 - gallon drums are produced.
C. Minimum cost of $1,390.00 when 65 30 - gallon drums and 160 55 - gallon drums are produced.
D. Minimum cost of $1,421.50 when 80 30 - gallon drums and 155 55 - gallon drums are produced.
E. Minimum cost of $1,281.00 when 150 30 - gallon drums and 90 55 - gallon drums are produced.
Answer: B
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Find the limit.
A. 9
B. 
C. -?
D. 
Determine the indefinite integral.
A. -ln(1 + cosh x) + C
B. cosh2 x + C
C. 
+ C
D. ln(1 + cosh x) + C
Write the first five terms of the arithmetic sequence with the first term a1 and common difference d. a1 = 
, d = -6
A. 
, 
, 
, 
, 
B. 
, 
, 
, 
, 
C. 
, 
, 
, 
, 
D. 
, 
, 
, 
, 
Solve. Write the solution set using set-builder notation and using interval notation. Graph the solution set. 0.6x + 15 + x > 2x + 19 - 0.5x
A. {x
x < -4}; (-?, -4)
B. {x
x < 40}; (-?, 40)
C. {x
x > 40}; (40, ?)
D. {x
x ? -4}; [-4, ?)