Whats the correct spelling for the plural circles

Trabajo colaborativo un emprendimiento dedicado a la produccion y venta de sacos de lana de oveja, tiene los siguientes costos mensuales:

Effective decision-making means comparing the additional costs of alternatives with the . total costs diminishing utility marginal benefits

Which sentence uses the denotative meaning of the word blue? i was feeling pretty blue when i lost my favorite earrings. i wore a blue scarf to complement the color of my eyes. the characters in the book all seemed rather blue. the movie’s ending always puts me in a blue mood.