The answer is A. 28.5 hope this helped!!!! :)
There are 31 emails left in her box. Hope this helps!! :)
C , the little 5 at the top represents how many times 7 is multiplied.
I think (0,0) is the only one that starts at 0 for both x and y and stay the same if the add the 3 to x and 6 to y.
