Add and subtract the values. Express your answer in scientific notation. (8.65 times 10 Superscript negative 3 Baseline) + (2.7 times 10 Superscript negative 4 Baseline) minus (9 times 10 Superscript negative 5)

2.35 times 10 Superscript negative 4
2.67 times 10 Superscript negative 4
8.83 times 10 Superscript negative 3
9.01 times 10 Superscript negative 3

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s