Question number $4.$ activity.

$0\mathrm{.}795,0\mathrm{.}800$

$0\mathrm{.}645,0\mathrm{.}845$

$0\mathrm{.}745,0\mathrm{.}895$

$0\mathrm{.}745,0\mathrm{.}695$

$[0\mathrm{.}665,0\mathrm{.}895]$

None of the above