Answer:
= $800
Explanation:
The computation of the total paying cost is shown below:
Variable cost per copies = (High cost - low cost) ÷ (High number of copies - low number of copies)
= ($360 - $280) ÷ (5,000 copies - 3,000 copies)
= $80 ÷ 2,000 copies
= $0.04
Now the total paying cost equal to
= Fixed cost + (High number of copies × Variable cost per copies)
= $500 + (7,500 copies × $0.04)
= $500 + $300
= $800