Answer
9.327
16*16= 256
13*13=169
256-169=87
87 squared=9.32737905309
9.32737905309 ROUNDED TO NEAREST THOUSANDTH= 9.327
The equation in standard form would be,

All you have to do is move -2/7x to the other side.
Hope this helped
:D
5 can stay as is, but 5503 can be rounded to 5500 so 5500x5=27500
Assuming 0 and 100 are included in the possible choices:
There are

multiples of 7 between 0 and 100, so there is a

probability of choosing a multiple of 7.