To calculate the total cost for Mr. Imani to purchase 10 packs of paper and 30 notebooks, we can use the formula given:
\[ \text{Cost} = 1.25p + 2.50n \]
where \( p = 10 \) and \( n = 30 \).
Substituting the values into the formula:
\[ \text{Cost} = 1.25(10) + 2.50(30) \]
Calculating each part:
\[ 1.25(10) = 12.50 \]
\[ 2.50(30) = 75.00 \]
Now sum these amounts:
\[ \text{Cost} = 12.50 + 75.00 = 87.50 \]
Therefore, it will cost Mr. Imani $87.50 to purchase 10 packs of paper and 30 notebooks.
The correct response is:
$87.50