Idont understand pls (random answer will be reported)

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

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2