Laura''s cds are either rock or hip-hop music. she has 3 more rock cds than hip-hop cds. if a cd is taken at random from her collection, the probability that it will be hip-hop is 2/5. how many rock cds and how many hip-hop cds does she have?explain how you got your step by step !

Francis is getting new carpet tiles in his living room and den. his living room and den are connected. he needs to figure out how much carpet he needs and the cost involved. if each tile costs $2.00 per sq ft, how much would it cost to have new tile put in the den? a) $24 b) $36 c) $48 d) $54 plz awnser soon