Answer: The total cost is $735.
Step-by-step explanation: Given that we have budgeted $35 a day per person and our group has 3 people total for a week.
We are to find the total cost.
We know that
there are 7 days in a week, so the cost of one person in a week will be
![C_w=\$(35*7)=\$245.](https://img.qammunity.org/2020/formulas/mathematics/high-school/wk31f2mireyjewcedeoyg7ns7snn83j64k.png)
Since there are 3 persons in our group, so the total cost is given by
![C=C_w*3=\$(245*3)=\$735.](https://img.qammunity.org/2020/formulas/mathematics/high-school/gcbxeq51dirs2mug8f71ad2f5x804ig3ha.png)
Thus, the total cost is $735.