To find out how many bags of popcorn Damari needs to sell to reach his goal, we can set up the following equation:
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Determine how much more money he needs to reach his goal: \[ 85 - 40 = 45 \]
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Now we need to find out how many bags of popcorn he has to sell to make an additional $45. Since he sells each bag for $3, we can set up another equation: \[ 3x = 45 \] where \(x\) is the number of bags he needs to sell.
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Now solve for \(x\): \[ x = \frac{45}{3} = 15 \]
So, Damari needs to sell 15 bags of popcorn to reach his goal of $85.
The correct answer is 15.