Answer:
336$
Step-by-step explanation:
Given: Each invitation costs a total of 3$.
Given: There were a total of 112 invitations made.
So, the question is asking you to find the total amount spent making the invitations. To do so we need to find the product/sum. Product in mathematical terms is used to describe the answer to a multiplication problem. Sum on the other hand is used to describe the answer to an addition problem. Now you could just add, but multiplication is a better way of simplifying the problem. So instead of saying 3 + 3 + 3 + 3.. or 112 + 112 + 122, we say 122 x 3 = x.
Now that we've created the equation, we can find the answer.
122 x 3 = 336
Answer: Andri spent 336$ on materials for her invitations.
Good luck! c: