Solve the problem.You inherit $28,000 from a very wealthy grandparent, with the stipulation that for the first year, the money must be invested in two stocks paying 4% and 10% annual interest, respectively. How much should be invested at each rate if the total interest earned for the year is to be $1600?
A. $8000 invested at 4%; $20,000 invested at 10%
B. $10,000 invested at 4%; $18,000 invested at 10%
C. $20,000 invested at 4%; $8000 invested at 10%
D. $18,000 invested at 4%; $10,000 invested at 10%
Answer: C
Mathematics
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÷ 
A. (x - 5)(x - 3)
B. 
C. 
D. 
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A. 0.8667° B. 0.0144° C. 0.1444° D. 0.0867°
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{6x + 7, if x ? 04 - 3x, if 0 < x < 3x, if x ? 3
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