The Math club buys lollipops for $0.25 each and sells them for $.50 each. Which expression represents the amount of profit the math club makes from selling p lollipops?
a) (0.50 - 0.25)p
b) (0.50 + 0.25)p
c) 0.50p - 0.25
d) 0.50p + 0.25
a) (0.50 - 0.25)p <--- because profit=revenue-cost
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