Hello, there!
<span>This is already simplified as there are no like terms that can be combined. x^3 is different than x^2, so it can't be combined.
x^3 is different from y^2 so it can't be combined.
And finally, x^2 is different from y^2, so it can't be combined either.
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I hope I helped!
Let me know if you need anything else!
~ Zoe
I think you do 20(20+x)=31(31+x). Basically you need to set up a proportion
We know that,
Interest, I =

Where, P = Principal = $1300
R = rate of interest = 9% annually =

%
T = Time = 1 month
So, I =
![\frac{1300×[tex] \frac{9}{12}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1300%C3%97%5Btex%5D%20%5Cfrac%7B9%7D%7B12%7D%20)
×1}{100} [/tex]
= $9.75
Interest paid per month is
$9.75