Answer:
B
Explanation:
Should be B.
Derivative of 9X^2 is 18x because the exponent multiplied by the coefficient is 18 and the exponent minus 1 is just 1.
Derivative of 1 is 0 because derivative of any real number is 0
Derivative of y^2 is 2y dy/dx because derivative of y^2 is 2y since the exponent 2 times the coefficient 1 equals 1. And the exponent 2 minus 1 is simply 1.
BUT since it's respect to x, we have to add dy/dx right at the end of the 2y