Which one is it
I need help

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

Just tell me how to set up the equation.

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?