There is 6 red, 5 yellow, 4 blue, 10 green Andrew picks one marble at a time from a box and puts it
back before the next drawing. He repeats this process 25
times and records the results in the table. Based on the
table, which color marble has an experimental probability
of 2/5?

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correct answer:

a + bi

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