Nned help with these two will give brainliest i have two minuets left!!!

We must first determine the shape of a rectangular prisms _ a0 to find area of the prism

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) = %

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?