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Sagot :
When the football is 81 feet high, it will be √  3 / 8 seconds
Function
Function relates input to output. Therefore,
- h(t)  = - 16t² + 75
Therefore,
t = number of seconds
h(t) = - 16t² + 75
h(t) = 81 ft
Therefore,
81 = - 16t² + 75
- 16t²  = 81 - 75
- 16t²  = 6
divide both sides by -16
t² = 6 / -16
t² = - 3 / 8
square root both sides
t = √  3 / 8 seconds
learn more on function here: https://brainly.com/question/4418459
Answer:
It'll be that high a 1.69 and 3
Step-by-step explanation:
It counts 1.69 as 81 even though it's more like 81.1, so 1.69 and 3 is the answer.
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