1. Horace buys 2 ¾ pounds of blueberries for a pie. He needs 48 ounces of blueberries for the pie. How many more pounds of blueberries does he need to buy?

 pounds of blueberries he need to buy more.

Step-by-step explanation:

Given:

Horace buys 2 ¾ pounds of blueberries for a pie.

He needs 48 ounces of blueberries for the pie.

Now, to find pounds of blueberries he need to buy more.

Number of pounds Horace buys blueberries for the pie = 2 ¾ pounds.

He needs blueberries for the pie =  48 ounces.

Now, by using conversion factor convert ounces into pounds:

1 ounce = 0.0625 pounds.

48 ounces = 0.0625 × 48 pounds.

48 ounces = 3 pounds.

Horace needs blueberries for the pie = 3 pounds.

Now, to get the pounds of blueberries he need to buy more we subtract number of pounds Horace buys blueberries for the pie from Horace needs blueberries for the pie:

Therefore, pounds of blueberries he need to buy more.