Premise:
"Inside he was older than most of the men Drew had known as old and cold as the desert rocks in nighttime."
Hypothesis: But on the outside, he was young and youthful.

it is not possible to tell

Premise:
"It's My Money"
Hypothesis: This money belongs to me.

yes

Premise:
"As one plan had failed, he must hunt about for another."
Hypothesis: One plan had fallen through, so he had to search for an alternative.
yes