<span>Equations:
x + y = 5000
3x + 3.5y = 15500
------
30x + 30y = 150000
30x + 35y = 155000
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5y = 5000
----
y = $1000.00 (amt invested at 3.5%)
---
x = $4000.00 (amt. invested at 3%)
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The slope of your line CD is 4 because it goes up to 8/2 ( rise/run)
His/her birthday is in the leap year which only happends every 3yrs he was born February 29
The sum of two irrational numbers, in some cases, will be irrational.