Emma started on the right y-intercept which was -1, but she needed to do rise over run which means she would need to go up 2 and over 1. Instead, Emma went over 2 and up 1.
multiply the number in each can by the number of cans and add the extras
Step-by-step explanation:
You can add them all up. This is the total of the number in each can and the extras:
8 +8 +8 +8 +8 +8 +8 +8 +8 +8 +8 +8 +8 +8 +8 +7
Or you can take advantage of the invention of multiplication to simplify repeated addition. Multiply the number in each can by the number of cans, then add the extras.