To find the total cost for Mr. Imani to purchase 10 packs of paper and 30 notebooks, we can substitute the values of \( p \) and \( n \) into the equation:
\[ 1.25p + 2.50n \]
Given:
- \( p = 10 \)
- \( n = 30 \)
Now we can substitute the values:
\[ 1.25(10) + 2.50(30) \]
Calculating each part:
\[ 1.25(10) = 12.50 \] \[ 2.50(30) = 75.00 \]
Now add the two amounts together:
\[ 12.50 + 75.00 = 87.50 \]
So, the total cost for Mr. Imani to purchase 10 packs of paper and 30 notebooks is $87.50.