f(x)=9x- -2 I => 4. Question Details Done Find the derivative using derivative rules. Simplify your answer all the way.

Differentiate the function using quotient rule. 3x y = 2х + x2

Sociologists studied the relation between income and number of years of education for members of a particular urban group. They found that a person with x years of education before seeking regular employment can expect to receive an average yearly income of y dollars per year. This is represented by the function y= 7x/2+ 4400 for 4sxs 16. Find the rate of change of income with respect to number of years of education. Evaluate the expression when x= 7. What is the rate of change of income with respect to number of years of education? dy | (Simplity your answer.) dx dy The value of when x =7 is dx (Type an integer or decimal rounded to the nearest hundredth as needed.)

Differentiate the function and simplify the final answer.  y = 2xsin x - x^2cosx