Answer:
1.625 pounds of butter, or 1 12/20
Explanation:
First, we must recognize that 4.5 times the recipe is just asking you to multiply the butter for 1 batch by the size of the batch for the bake sale. (.25 x 4.5) =1.125
Do not forget that she must make two more batches, or .5 pounds of butter.
(.25+.25=.5)
By adding the bake sale amount by the extra batches for her family we can decifer that she needs 1.625 poinds of butter. (1.125+.5=1.625pounds)