Solve the problem.Susan purchased some municipal bonds yielding 7% annually and some certificates of deposit yielding 9% annually. If Susan's investment amounts to $19,000 and the annual income is $1590, how much money is invested in bonds and how much is invested in certificates of deposit?
A. $13,000 in bonds; $6000 in certificates of deposit
B. $5500 in bonds; $13,500 in certificates of deposit
C. $13,500 in bonds; $5500 in certificates of deposit
D. $6000 in bonds; $13,000 in certificates of deposit
Answer: D
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A. 27 B. 81 C. not a real number D. 9
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The graph of a function f is given. Use the graph to answer the question. 
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