Compute the contribution to GDP of this set of transactions, using the expenditure approach, i. e., by assuming expenditures of buyers of final goods and services. Assume that The Home Station receives the hardware at no charge and that other costs are zero. Which of the following would be included in the expenditure method of calculating GDP? Check all that apply.

1. Firedog spends $100.
2. Bob spends $1,100.
3. Better Buy spends $750.