Ready A golf pro practices his swing by driving golf balls off the edge of a cliff into a lake. The height of the ball above the lake (measured in meters) as a function of time (measured in seconds and represented by the variable t) from the instant of impact with the golf club is the following: h(t)=58.8+ 19.6t - 4.9t The expressions shown are equivalent: -4.9t + 19.6t + 58.8 standard form -4.9(t - 6)(t + 2) factored form -4.9(t - 2) + 78.4 vertex form 1. Which expression is the most useful for finding how many seconds it takes for the ball to hit the water? Why? 2. Which expression is the most useful for finding how many seconds it takes for the ball to reach its maximum height? Why? 3. Which expression is the most useful for finding the maximum height of the ball? Justify your answer.