Answer:
Both a relation and a function
Explanation:
A relation is a set of one or more ordered pairs.
A function is a relation in which each element of the domain is paired with EXACTLY one element of the range.
In this case, the cashews cost $3.42 per pound. This means that it is impossible for a certain weight of cashews to have two different prices.
Therefore, the situation represents both a relation and a function.