I really need help with this. It's a quiz question!!!
If a ball is thrown directly upward with a velocity of 30 ft/s, its height (in feet) after t seconds is given by y = 30t − 16t^2. What is the maximum height attained by the ball? (Round your answer to the nearest whole number.)

Question

I really need help with this. It's a quiz question!!!
If a ball is thrown directly upward with a velocity of 30 ft/s, its height (in feet) after t seconds is given by y = 30t − 16t^2. What is the maximum height attained by the ball? (Round your answer to the nearest whole number.)

anonymous · Answer

See, when is a function maximum?

anonymous · Answer

What is the condition of the function or the derivative?