Why does it say We're sorry, but we are not able to complete your registration at this time. I need for my grades

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241. a) 0 b) 1 c) 2 d) 1 2

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?