What is the rule about subjects joined and?

In what way do you think it would be difficult to live next to the united states

Which of the following will most likely happen if the pancreas does not produce sufficient insulin? blood sugar will decrease because insulin lowers blood sugar when it rises too high. blood sugar will increase because insulin increases blood sugar when it falls too low. blood sugar will increase because insulin lowers blood sugar when it rises too high. blood sugar will decrease because insulin increases blood sugar when it falls too low.

Which inequality is represented by this graph? f(0, 1)