Which of the statements below are possible solutions to the problem of global warming? (clear the rain forests, develop renewable energy resources, improve agricultural methods, improve fuel efficiency in cars, increase manufacturing, reduce petroleum use)

The correct answers are:

- develop renewable energy resources;

This will help significantly as it will move aside the usage of the fossil fuels which are one of the main sources of CO2 and methane in the atmosphere.

- improve agricultural methods;

By reducing the usage of the fossil fuels as well as chemicals in the agriculture can be lowered the emissions of methane and chemicals into the atmosphere.

- improve fuel efficiency in cars;

By improving the fuel efficiency in the the cars the result will be lesser usage of fuels in them which will give the same performances, so a win-win situation.

- reduce petroleum use;

Managing to reduce the usage or totally stop it of petroleum will stop huge amount of the CO2 emissions into the atmosphere.

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)