The square root of 20 is between which two integers

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

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

The function models the number of accidents