3 terms
5x, 2x^2, -8
2nd degree
highest exponent is 2
2nd degree polynomial (3 terms)
Andrew played for 1 hour and 20 minutes
Lizzie played for 2 hours and 40 minutes
Andrew played for half as long as Lizzie did, so Lizzie played for 1 1/3 hours longer than Andrew did. Hope this helps!