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In the introduction I would define and explain, briefly, the key terms in the question. The main terms that I would focus on are market failure as the misallocation of resources in an economy; and explain...

The formation of a waterfall occurs due to a difference in bands of soft and hard rock. The hard rock, e.g. granite, is eroded at a far slower speed than that of the soft rock, e.g. sandstone. This proces...

3*cos(3x)

First law: Unless acted upon by a force, a object either remains at rest or moves at a constant speed.Second Law: Force=Mass*AccelerationThird Law: For every action there is an equal and opposite reaction...

First have a look at the coefficients of each variable. You're trying to spot if the coefficient of one variable is a multiple of the coefficient of the other in the second equation. If so, you can multi...