She wrote a 4 instead of a 3.
There are only 3 numbers that are greater than 7. They are 8, 9, and 10. Mariah must have include 7 in her list. That is how she got 4 instead of 3.
Pretty sure this is wrong but I got,
$77,184,751.5431
1207838929299236636236+2892
If the 3 is supposed to be replaced by any x's, then the answer would be 29 I believe.
Answer:
B
Step-by-step explanation:
all sides are the same
