425/1700 = 0.25
Therefore he spends 25% of his income on rent
2+(-24x^2-24x)÷(12x^3-24x)
can only be written as or as . One has the multiplication sign the other does not, which is why we put it together, because we know that if they are together they will be multiplied.
I hope this helps, if you have any other question on this or any other question, just ask. I am here to help.
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