X+y and y+x are the same as stated by the commutative law.
This is because let’s say x=2 and y=3,
2+3=5 and 3+2=5
The interest is $13000 and the ending amount is $5300. The equation for the interest is 4000x0.065x5
- 57 - 12i
distribute the parenthesis
= 81i² - 36i + 24 + 24i
[ note that i² = (√- 1 )² = - 1 ]
= - 81 - 36i + 24 + 24i ( collect like terms )
= - 57 - 12i
It crosses the y-axis at 2 bc y=mc+b b is your y intercept
I would say 15/3= 5 because they are really close