SOLUTION: A projectile is shot vertically upward. Its height h in feet after time t in seconds may be expressed by the formula . Find t when h=80.0 feet.

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Question 956291: A projectile is shot vertically upward. Its height h in feet after time t in seconds may be expressed by the formula .
Find t when h=80.0 feet.
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
You did not specify a formula.
If formula below is not your given formula,
disregard answer and re-post question.
80.0ft=96t-16t%5E2
5ft=6t-t%5E2
t%5E2-6t%2B5ft=0
%28t-1%29=0 or %28t-5%29=0
t=1 or t=5 ANSWER: When h=80.0 feet, t=1 or 5