What is the difference between positive and negative exponents

After the seventh month of a 12-month loan: the numerator is: {(n + 11) + (n + 10) + (n + 9) + (n + 8) + (n + 7) + (n + 6) + (n + 5)} = , and the denominator is: {(n) + (n + 1) + + (n + 11)} = . therefore, the fraction is numerator/denominator (to the nearest tenth) = %

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

How do you write a paragraph proof to prove that the corresponding angles shown are congruent