Solve the linear programming problem.A summer camp wants to hire counselors and aides to fill its staffing needs at minimum cost. The average monthly salary of a counselor is $2400 and the average monthly salary of an aide is $1100. The camp can accommodate up to 35 staff members and needs at least 20 to run properly. They must have at least 10 aides, and may have up to 3 aides for every 2 counselors. How many counselors and how many aides should the camp hire to minimize cost?
A. 19 counselors and 23 aides
B. 8 counselors and 12 aides
C. 13 counselors and 17 aides
D. 13 counselors and 16 aides
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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Find the volume specified. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.Find the volume of a barber's pole having the shape of a right circular cylinder of radius 4 in. and height 31 in. topped by a sphere of the same radius.
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A. - 
B. - 
C. 
D. 
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Simplify. Assume that all variables are nonzero.
A. 1 B. -417 C. Undefined D. 0
Mathematics