The answer is 7x^2 - 2x + 4, so answer D.
It depends on how many people you are feeding
11x - 3 = x - 13
-x -x
10x - 3 = -13
+13 +13
10x = 10
---- -----
10 10
x = 1
No if it was 1 = 0 then it will be no solution. When they both are equal it is either infinitive solution or one solution. It's only when the two numbers of a equation do not eauql each other is that it is no solution.