Mike invested $7,500 total in two bank accounts. Once account paid 4% interest and the other account paid 6%. The total amount he received last year from both accounts was $420. If you wanted to figure out how much Mike invested in each account, which two equations would best represent the correct system for this problem? (Assume that you are letting x represent the amount invested in the 4% account and y represent the amount invested in the 6% account) A. x + y = 420 0.04x+0.06y = 7500 B. x + y = 7500 0.06x + 0.04y = 420 C. x +y = 7500 : 0.04x +0.06y = 420 D. x +y = 420 0.06x + 0.04y = 7500

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