Formal:
* Ek hoop u het van my aanbieding gehou. (This is the most literal translation and is very formal.)
* Ek vertrou dat u my aanbieding geniet het. (This is slightly less formal, but still very polite.)
Informal:
* Ek hoop jy het van my aanbieding gehou. (This is a more casual and friendly way to say it.)
* Was jy van my aanbieding? (This is a more direct question, and implies you are confident in your presentation.)
You can also use a phrase like "Ek hoop jy het die inligting nuttig gevind." (I hope you found the information useful.) This is a good alternative if you are unsure about whether the audience enjoyed the presentation itself, but want to emphasize the value of the content.
Ultimately, the best way to say it depends on your relationship with the audience and the overall tone of the presentation.