Final answer:
To calculate the net spending on toner cartridges after rebates, multiply the number of cartridges by the cost of each, and subtract the sum of rebates, leading to a total cost of $2400 after rebating 40 cartridges.
Step-by-step explanation:
To calculate the total cost of the toner cartridges after receiving rebates, you must first determine the full price of all cartridges and then subtract the total rebate amount.
- Calculate the total cost of all cartridges without rebates: 40 cartridges × $75 = $3000.
- Calculate the total amount of rebates: 40 cartridges × $15 = $600.
- Subtract the total rebate amount from the total cost of the cartridges: $3000 - $600 = $2400.
After recycling all 40 cartridges and receiving rebates for each, the net amount spent on the cartridges is $2400.