The polynomial -7x^2 + 4x - 1 has a degree of 2, since the highest exponent in the polynomial is 2. It also has 3 terms.
The polynomial 24 has a degree of 0, since it is a constant and does not have any variables. It also has 1 term.
The polynomial 10x has a degree of 1, since the highest exponent in the polynomial is 1. It also has 1 term.