In an obstacle course race, how many ways can five finalists be ordered?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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