Laurie uses 0.25 pounds of butter to make a batch of her grandmother's cookies. she needs to make 4.5 times ther ecipe for the school bake sale, annd an additional two batches for her family. how much butter does lauie use to make all the cookies?

Laurie must make 4.5 batches for the school bake sale, and 2 batches for her family. Therefore, in total, Laurie must make 4.5 + 2 = 6.5 batches of cookies.

Since each batch of cookies requires 0.25 pounds of butter, we can multiply that amount by the number of batches baked: 0.25 * 6.5 = 1.625 pounds of butter.

So Laurie uses 1.625 pounds of butter to make all the cookies.