5x + 6y + 3z (37) Write a system of equations to model this problem, and then solve algebraically. Bob received a lottery check for $10,000. He invested the money into three different accounts. Part of his money was placed in a savings account paying 7% interest. A second portion, which was twice the first amount, was deposited in a CD paying 9% interest. The remainder of the money was put into a money market fund yielding 10% interest. If Bob's total interest over a one-year period was $925, how much was deposited in each of the three accounts?

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