Answer:
1
Explanation:
The degree of a polynomial is the highest power of the variable in the polynomial. In this case, the highest power of the variable is 1, so the degree of the polynomial 5x+7 is 1.
For example, the polynomial 2x^2 + 3x + 4 has a degree of 2 because the highest power of the variable x is 2. The polynomial x^3 + x + 1 has a degree of 3 because the highest power of x is 3