F ( 18 ) = 1,50 * 18 + 12.50 = 27.00 + 12.50 = $39.50,
x - number of movies.
Answer: D ) $39.50; this is the amount Kelsey pays for 18 movies in 1 month
Interactions may be commensalism, mutualism, or parasitism.
The answer is NO. This is because different environments require different adaptations. A desirable trait in one environment may be inconsequential or detrimental in another environment. This is the reason also why evolution is continuous as natural selection acts on traits of a population to ensure desirable traits are retained with changes in the environment in a dynamic world.
They are called Consumers I believe hope that helps ☺