Which statement is an opinion? acanthaster planci, also known as the crown-of-thorns starfish, is a carnivorous starfish that preys on coral. in the reefs off the north coast of jamaica, one can find a species of monatrea annularis, which is flat to capture light efficiently. stony coral is one example of the hexacoral polyps and has tentacles in groups of six. people must take action now to protect coral reefs by reducing pollution and emissions of noxious gases

People must take action now to protect coral reefs by reducing pollution and emissions of noxious gases.

Step-by-step explanation:

A statement is an opinion when a general judgement is formed about something. Its not necessary to be based on knowledge or facts but a general judgement.

So, here in the given paragraph, the last line shows the opinion.

People must take action now to protect coral reefs by reducing pollution and emissions of noxious gases.

a and c

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.