"pinmaster" wrote:
Without knowing the formula's result it's impossible
to give an answer.

"Deadloss" wrote:
That's all that was said in the question. I've tried
doing it, but I can't! :(

Nor can anyone. Do you understand "pinmaster's" point?
Without knowing what SUM(A1:A4)+33*SQRT(200) should
add up to, it is impossible to determine what A1 should be,
given A2:A4.

That said, of the choices give by you, my money is on A1
being -259.69. The reason: then
SUM(A1:A4)+33*SQRT(200) is about 239 -- a round
number. Teachers usually like to use round numbers for
problems; and all the other terms are round numbers
(22, 3, 7, 33, 200). All the other choices that you
provide for A1 result in SUM(A1:A4)+33*SQRT(200)
equal to xxx.69 -- not a round number.