i need help with 10 - 13

Question 10 1 pts For the function f(x) = 2x3 + 6x2 3 a) Find all critical values and identify each critical value as a relative max, a relative min, or neither. Give your answers as complete points (x, y). b) Find the intervals where the function is concave upward or concave downward. Question 11 1 pts For g(x) = x3 3x2 , and the interval [-1, 8] : a) Find the critical value(s) that fall within the interval. b) Identify absolute maxima and minima for g in the interval by comparing y - values. You may wish to make an x-y table. Question 13 1 pts At a price of $50 for a two-hour lesson, a paddle boarding company attracts 30 customers. Every $2 decrease in price attracts an additional 3 customers. a) Find the price that will maximize the company's revenue. Use a derivative for full credit. Round to two places if needed. 33 b) At this price, how many customers will there be? Round to a whole number if needed. c) What will be that maximum revenue? Round to two places if needed. $ Question 12 1 pts D B Use the graph above the fill in the table for each point (A, B, C, D). Put "+" for positive, "-" for negative, and "0" for zero. f ' f " A B C D In the first column, answer about the output of the original function. In the second column, answer about the first derivative. In the third column, answer about the second derivative