Answer:
Package 3
Explanation:
Package 1,
No. of plates = 5
Cost = $38.75
Cost of 1 plate =
Package 2,
No. of plates = 8
Cost = $58
Cost of 1 plate =
Package 3,
No. of plates = 14
Cost = $94.5
Cost of 1 plate =
The cost of 1 plate in package 3 is the least. It means she should buy package 3.