The height, `h` metres, of a ball at time `t` seconds after it is thrown up into the air is given by the formula:
`h = 2 + 20t − 5t2`
Find the value(s) of `t` when `h = 22`.
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The height, `h` metres, of a ball at time `t` seconds after it is thrown up into the air is given by the formula:
`h = 2 + 20t − 5t2`
Find the value(s) of `t` when `h = 22`.
You did not answer this question.