Premise:
"Approval thresholds, for example, should show which officials have the authority to review and approve acquisitions."
Hypothesis: Approval thresholds will let everyone know who is in charge of approvals and reviews of acquisitions.

yes

Premise:
"Seeing himself unattractively represented in hundreds of editorial cartoons as a leathery-faced half-man, half-elephant."
Hypothesis: Some editorial cartoons show the president unattractively.

it is not possible to tell

Premise:
"Morgan went to New York banks and compelled them to dip into their reserves to offer loans that would allow stockholders to cover their margins and begin buying again."
Hypothesis: The action was successful, and stockholders started making more transactions.
it is not possible to tell