The expression (3x+2)E [2;14] seems to indicate that the value of x lies in the interval [2, 14]. If we want to find the greatest value of the expression (3x+2), we should use the greatest value of x in the given interval.
So, if x = 14 (the greatest value in the interval), then the expression becomes:
(3*14) + 2 = 42 + 2 = 44
Therefore, if the expression represents the amount of money Sophia has in soles, then Sophia has 44 soles when x is at its greatest value in the given interval.