Will give brain thing for free

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

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

Let x = a + bi and y = c + di and z = f + gi. which statements are true?