I have tried this many times but nothing is right ​

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7

What is the measure of angle afe? 79 81 91 99

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)