Answer
Conjecture: the instantaneous velocity at at t=1 is $96$ ft/s.
Work Step by Step
(Table in the screenshot was set up using the calculator at desmos.com)
Fill the table entries from left to right with
$80,88,94.4,95.84,95.984.$
The average velocity approaches $96$ ft/s as the time interval gets shorter.
Conjecture: the instantaneous velocity at at t=1 is $96$ ft/s.
