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.
1.$450.00
2.$62.50
3.$43.75
4.$87.50