Solve the 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 45 staff members and needs at least 30 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. 12 counselors and 18 aides
B. 35 counselors and 10 aides
C. 27 counselors and 18 aides
D. 18 counselors and 12 aides
Answer: A
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Solve the problem.A painter can finish painting a house in 5 hours. Her assistant takes 7 hours to finish the same job. How long would it take for them to complete the job if they were working together?
A. 6 hours
B. 4 hours
C. 
hour
D. 2
hours
Find the missing parts of the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropriate.a = 26 ftb = 39 ftc = 40 ft
A. A = 38.4°, B = 34.4°, C = 107.2° B. No triangle satisfies the given conditions. C. A = 68.7°, B = 38.4°, C = 72.9° D. A = 38.4°, B = 68.7°, C = 72.9°
Differentiate.f(x) = 
A. 
B. 
C. - 
D. - 
Using the triangle in the illustration, find cos K.
cos K = __________
Fill in the blank(s) with the appropriate word(s).