Please solve 2, 3, and 4 a and b

Find an equation of the tangant line to the ourea at the ghen point. y=xr(49,7) If a ball is thrown into the air with a velacity of 41f/s, its height (in feet) after [ seconds is given by=41216i2. Find the velucity when 2=1. ft/s If a rock is thrown uaward on the planct Mars with a voloaity of 17m/s, its height (in meters) after r seconds is given by H - 17t1.8st ? \{a) Find the velacity of the rock after cne second. X mis (b) Find the welscity of the rack when t=g. mis (c) When will the rock hit the surtece? (Round your answer to one dedmal place-) (d) With what velocity will the rocs hit the surface? mis