Please show all work thank you!

2. An object is thrown into the air. Its height in feet above the ground + seconds later is given by h(t) = -16t2 + 30t + 25. Provide a graph and include the units to the answer. You may use a graphing calculator on this problem. a. Find the time when the object reaches its maximum height. Show your work. b. How high does it get? C. When does it land