Solve the problem.A drugstore sells two types, A and B, of humidifiers. Each humidifier of type A and type B costs $10 and $20, respectively. The store wants at least 8 humidifiers in stock and does not want its investment in the humidifiers to exceed $1000. Graph the possible inventory of the humidifiers and find the vertices. 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Change the complex number to rectangular form.(cos 120° + j sin 120°)
A. 0.952 - 0.305j B. -0.952 - 0.305j C. 0.866 + 0.500j D. -0.500 + 0.866j
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Change the logarithmic expression to an equivalent expression involving an exponent.log6216 = x
A. 2166 = x B. x6 = 216 C. 216x = 6 D. 6x = 216
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Evaluate.(-6)4
A. 36 B. -36 C. -1296 D. 1296
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For this problem, let 
, and 
, and find
tan ?
?
A. 
B. 
C. 
D. 
E. 
Mathematics