5. [2/4 Points] DETAILS PREVIOUS ANSWERS LARCALCET7 4.2.033. 1/6 Submissions Used MY NOTES ASK YOUR TEACHER The height of a ball t seconds after it is thrown upward from a height of 7 feet and with an initial velocity of 64 feet per second is f (t) = -16t2 + 64t + 7. (a) Verify that f(1) = f(3). f (1) = 55 ft f (3) = 55 ft (b) According to Rolle's Theorem, what must be the velocity at some time in the interval (1, 3)? x ft/sec Find that time. t = X S Need Help? Read It Watch It Viewing Saved Work Revert to Last Response Submit