Final answer:
To calculate the number of days a house was on the market, subtract the date listed from the date sold. Copy the formula to calculate the number of days for other houses.
Step-by-step explanation:
To calculate the number of days the first house was on the market, you need to subtract the date listed from the date sold. You can use the formula =date_sold - date_listed in cell C5. Then, you can copy this formula to the range C:C13 by selecting cell C5, dragging the fill handle down to cell C13, and releasing the mouse button. This will automatically adjust the formula for each row.