Find the slope of the line that passes through the points (2,4) and (6,12)?
2 answers:
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a = amount invested at 5%
b = amount invested at 2%
now, we know the total invested by Mr Wilson was 20000, so whatever "a" and "b" might be, we know that a + b = 20000.
now, we know the total of earned interest is 550 bucks, so then