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30 votes
30 votes
Allison makes Valentine Cards that she would like tosell at an upcoming school fair. She must pay $90 torent a booth at the school fair. The materials for eachcard cost $2.50, and she plans to sell each card for$3.75. To make a profit, she must make more moneythan she spends. Susana has already made 8 ValentineCards.Part A (first textbox) Write and solve an inequality toshow how many Valentine cards Susana should makein order to make some profit. Show the steps of yoursolutionsPart B (second textbox) Given that Susana has alreadymade 8 cards, how many additional cards must shemake and sell to make a profit? Answer in a completesentence.

User Colleen  Kitchen
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1 Answer

17 votes
17 votes

Part A

means that what she spends must be less than what she must earn


90+2.50C<3.75C

where C is the number of cards

solving the inequality...


\begin{gathered} 90+2.50C<3.75C \\ 90<(3.75-2.50)C \\ 90<1.25C \\ (90)/(1.25)72 \end{gathered}

she should make more than 72 Cards ,at least 73

Part B

If she must make 73 to earn something and Susana already made 8 we must do a subtraction to find out how many are missing

so


73-8=65

she must make and sell 65 cards to make a profit

User Ekambaram E
by
3.0k points
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