By solving in a system of linear equations, the balance of the investment account 4 years ago is equal to $ 4708.
Herein we have a word problem, where the statement itself represents a linear equation, where we know the current balance and the difference between the current balance and the balance seen four years ago. Mathematically speaking, we have the following linear equation:
y = x + 308 (1)
y = 4708 (2)
Where:
Then, the solution of the system of linear equations is equal to (x, y) = (4408, 4708).
By solving in a system of linear equations, the balance of the investment account 4 years ago is equal to $ 4708.
To learn more on systems of linear equations: https://brainly.com/question/21292369
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