To determine how much it will cost Mr. Imani to purchase 10 packs of paper and 30 notebooks, we can substitute \( p = 10 \) and \( n = 30 \) into the cost expression \( 1.25p + 2.50n \).
Calculate each component:
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Cost of paper: \[ 1.25 \times 10 = 12.50 \]
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Cost of notebooks: \[ 2.50 \times 30 = 75.00 \]
Now, add both costs together: \[ 12.50 + 75.00 = 87.50 \]
Therefore, it will cost Mr. Imani $87.50 to purchase 10 packs of paper and 30 notebooks.
The correct response is: $87.50