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A retailer has some toe rings that cost him $2 each. He wants to sell them at a profit of 60% of the cost. What should be the selling price of the toe rings? $__________
Porphyrin Ring
A large, heterocyclic macrocycle composed of four modified pyrrole subunits interconnected via methine bridges, essential in the structure of heme groups and chlorophyll.
Magnesium
A chemical element with the symbol Mg, essential for living cells, playing a critical role in over 300 enzymatic reactions, including energy production.
Manganese
A chemical element with the symbol Mn and atomic number 25, known for its importance in metabolism and enzyme function in living organisms.
Phosphorus
Phosphorus is a chemical element with symbol P, essential for life as part of the DNA and RNA structure, energy transfer molecules like ATP, and in bones and teeth.
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