The price of a company's stock over the 12-week period at the beginning of 2012 can be approximated by the function f(x)=394x, where x=1 designates the beginning of week 1. (a) When is the stock increasing in price? (b) At what rate is the stock increasing at the beginning of the 4th week? (c) At what rate is the stock increasing at the beginning of the 7th week? (a) When is the stock increasing in price? Select the correct answer below, and if necessary, fill in any answer boxes to complete your choice. OA. The stock is increasing in price from week to week B. The stock doesn't increase over the 12-week period. If a cannonbal is shot directly upward with a velocity of 272 fise its height is feet above the ground after 1 seconds is given by a)-2721-18r Find the velocity and the acceleration after 1 seconds. When does the cannonball reach maximum height? What is the maximum height the cannonball reaches? When does it hit the ground? The velocity furt seconds is v 1/²