The following information was available about receiving costs for the first 8 months of the year:
 
    
| Month | Receiving orders | Receiving costs | 
| January | 1,100 | $21,000 | 
| February | 1,600 | 32,000 | 
| March | 1,700 | 30,000 | 
| April | 1,300 | 23,000 | 
| May | 900 | 18,000 | 
| June | 1,200 | 20,000 | 
| July | 1,600 | 26,500 | 
| August | 1,050 | 20,700 | 
1.  Determine the variable cost per receiving order using the High-Low method.
2.  Determine the fixed cost  using the High-Low method.
3.  Give the cost equation using the High-Low method.
4.  Determine the receiving costs using the High-Low method if the company expects 1,370 receiving orders.