What is filter in image processing

Which location-sharing service offers items for users as a gaming component and also allows them to collectively link their check-ins to publish a trip? a. whrrl b. buzzd c. foursquare (this option is wrong i already tried) d. gowalla for plato

Which is the best minecraft server? a. mineplex b. worldonecraft c. 9b9t d. 2b2t

How often does colleges update the cost of attendance on their website? . a)every two years b) every four years c) every year d) every semester