Arecent study found that an increase in the federal tax on beer (which would increase the price of beer) would reduce the demand for marijuana. based on this information we can conclude that
a. marijuana is an inferior good.
b. beer and marijuana are substitute goods.
c. beer and marijuana are complementary goods.
d. beer is an inferior good.

C. Beer and Marijuana are complementary goods

Explanation:

Since an increase in the price of beer is reducing the demand for marijuana this means that people were buying both at a time, now that the price of beer is higher they cannot afford both so are buying beer only. Therefore we can say that Beer and Marijuana are complementary goods.

If the increase in beer price led to an increase in Marijuana demand, then that would make them substitute goods since people are substituting one vice for another cheaper one.

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disorders of the brain include both behavior disorders and other psychiatric illnesses. the primary difference between a behavior disorder and another type of psychiatric disorder is the presence of choice. psychiatric conditions are considered to be involuntary while in behavior disorders, choices are essential.

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)