Answer :
Heather could make a total of 45 different invitations by choosing from 5 different types of paper and 9 different fonts using the basic counting principle.
The question involves calculating the total number of different invitations Heather could make by choosing from 5 different types of paper and 9 different fonts. To find the total number of combinations, we use the basic principle of counting, where we multiply the number of options for each choice together.
Since Heather has 5 options for paper and 9 options for fonts, we multiply these two numbers to find the total number of different invitations possible.
Therefore, the total number of different invitations Heather could make is: 5 types of paper * 9 fonts = 45 different invitations
