Find the average value of the function f(x)=−4x3f(x)=−4x3 on the closed interval [−1,3][−1,3]. average value

What are the solutions of the system? y = x^2 + 2x +3y = 4x - 2a. (-1, -6) and (-3, -14)b. (-1, 10) and (3, -6)c. no solutiond. (-1, -6) and (3, 10)

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction