One number is 4 times a first number. A third number is 100 more than the first number. If the sum of the three numbers is 400, find the numbers

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

linear pair postulates

what is the answer to this