The popularity of digital cameras has enticed large discount stores like walminus−mart and costco to offer digital photo printing services. how does this affect the digital photo printing market?

The supply curve for digital photo printing services shifts to the right.

Explanation: The popularity of digital cameras has enticed large discount stores like walminus−mart and costco to offer digital photo printing services.  As a result of this, there is an increase in the supply of digital photo printing services leading to a rightward shift in the supply curve. With demand unchanged this will  lead to a fall  in the equilibrium price of digital photo printing services and an increase in the quantity of digital photo printing services.

answerimplicit;

answer the law of increasing costs;