Which expression represents the algebraic phrase ""negative 3. 9 less than one third of a number""? startfraction n over 3 endfraction minus (negative 3. 9) startfraction n over 3 endfraction minus 3. 9 startfraction negative 3. 9 over 3 endfraction + n startfraction 3. 9 over 3 endfraction minus (negative n).

Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.

How many credit hours does a student typically need to complete general educational requirements at a four year college

Zachary has been trying to work on an essay for almost three hours, be he can't seem to focus for more than 15 or 20 minutes at a time. what should he do so that the quality of his work doesnt suffer because of poor concentration and lack of energy