Mr. Imani wants to purchase paper and notebooks for his classroom. At dollar discount he can buy packs of paper, p, for $1.25 each and notebooks, n, for $2.50 each. This is modeled by 1.25p + 2.50n. Evaluate for p = 10 and n = 30 to find how much it will cost Mr. Imani to purchase 10 packs of paper and 30 notebooks.

Options:
$62.50
$450.00
$43.75
$87.50

To evaluate the expression 1.25p + 2.50n with p = 10 and n = 30, we plug in the given values:

1.25(10) + 2.50(30)
= 12.50 + 75
= 87.50

Therefore, it will cost Mr. Imani $87.50 to purchase 10 packs of paper and 30 notebooks. The correct answer is option $87.50.