Oscar took $50 from his office’s petty cash fund to buy supplies. he spent $11 on notepads, $12 on labels, and $9 on envelopes. he wanted to spend the remaining money on three boxes of ballpoint pens, but he needed to allow $3 for sales tax. what’s the most that one box of pens could cost?

The most that a box of pens could cost is $5.

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The boxes of pens must not  cost more than $5 each.

Step-by-step explanation:

$11 + $12 + $9 + 3p + $3 sales tax ≤ $50           Set up the inequality.

3p + $35 ≤ $50                                                    Combine the constants ($11 + $12 +

                                                                            $9 + $3 = $35).

3p + $35 – $35 ≤ $50 – $35                              Subtract $10 from both sides of        the inequality.

3p ≤ $15

3p⁄3 ≤ $15⁄3                                                          Divide both sides of the inequality by 3.

p ≤ $5  

answer: the correct one is a

step-by-step explanation:

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