Which describes how to calculate the range of this data set? Which describes how to calculate the range of this data set?

4, 5, 6, 8, 11, 12
Subtract 11-5
Subtract 12-4
Add 11+5
Add 12+4

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone.which are equivalent equations?

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

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55