The area of a square can be modeled by the equation
A = 12000 + 400,
where x is the serial number of the square. What is the serial
number of the square with a side length of 100 cm?

pls help

The area of a square can be modeled by the equation A 12000 400 where x is the serial number of the square What is the serial number of the square with a side l class=