Zhao puts z dollars into an investment with an interest rate of 3 percent per...
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Zhao puts z dollars into an investment with an interest rate of 3 percent per year and y dollars into an investment with an interest rate of 8 percent per year She invests a total of 3200 and her interest earnings after one year are 181 From this information we can create two equations one for the total investment and one for the interest earned State both equations and then solve the system to determine how much Zhao invested in each The equation that describes the total investment is The equation that describes the interest earned is Amount invested at 3 percent interest is 5 Amount invested at 8 percent interest is S 4
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