Temperance shows a situation of balance and harmony. This suggests that the investment offer he has received is well thought out and not risky. Also, the presence of a friend confirms that this is an opportunity worth considering.
The Knight of Cups indicates that Roberta should pay particular attention to the details of the offer, but also to the rationale behind the offer. The CavalieKing of Cups can be a little impulsive and this could mean that Roberta should evaluate all available information before making a decision.
The reversed King of Cups shows that the investment result may not be as expected. Despite the excellent initial outlook, there is a risk that things will not go as planned. Roberta should therefore be prepared to face any unexpected events if she decides to accept the offer.
In conclusion, the tarot cards show that the decision that Roberta will have to make regarding this offer is complex and involves a certain degree of risk. However, with proper attention to detail and the motivations behind the investment, Roberta could do well. Therefore, my answer is: Yes, Roberta should seriously consider this investment offer.