Can someone please answer these thank you so much

Can someone me to find the right verbs and conjugations in spanish?

Write the indefinite article ( un, una, unos, unas ) for each word. if both masculine and feminine articles are possible, write both. 1. autobús 2. foto (fotografía) 3. turistas 4. números

If the pants costs $233 how would you respond to the question ¿cuánto cuestan los pantalones?