During the day, sam spent $4.85 on lunch. he also bought 2 books for $7.95 each. at the end of the day we had $8.20 left how much money did he start with.

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

answer: 12,000

step-by-step explanation: first you ar e supposed to add. then multiply then subtract