Ariver boat tour begins by going 60 miles upstream against a 5 mph current. then the boat turns around and returns with the current. what still-water speed should the captain use to complete the tour in 5 hours?

Hii1977 cleaner shrimp are a species of shrimp that clean parasites from other organisms. fish allow the shrimp to eat the parasites in their mouth. the shrimp get a source of nutrition. the relationship between the shrimp and the fish is this association indicates that for the smaill aneser arecommensal,mutualistic,or parasitic for the begger one the anser are the shrimp and fish benefit each other , the shrimp harm the fish, or the fish do not benetit from the shrimp

Plz hurry evaluate the expression a+b where a=8 and b=19

What is 44.5443495 rounded to the nearest hundred thousandths?