If n ≠ 0, which quadratic equation is written in standard form a.) x+x^2=n b) -x^2-x-n=0 c) x+x^2+n=0 d) x^2-x=n. be sure to expain why you choose this answer

B. -x^2 - x - n = 0.

Step-by-step explanation:

In standard form the terms on the left side are in descending degree order, and the right side equals zero.

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

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