PLEASE HELP!!! I REALLY NEED SOMEONE TO ANSWER THIS I HAVE ATTACHED A PICTURE

Answer:
2.3 hours, or 2 hours & 18 minutes
Step-by-step explanation:
we are trying to find h when d is 56.68, so I replaced d with 56.68
[tex]56.68=24.6h+0.1\\[/tex]
subtract 0.1 from both sides
[tex]56.58=24.6h[/tex]
divide both sides by 24.6
[tex]2.3=h[/tex]