The dependence of America on gasoline and diesel-powered vehicles has had both negative and positive effects. A positive effect has been the ability to distribute goods to areas where they are not manufactured. A negative effect has been the proliferation of illegal used tire dumping. This is an example of a(n):

Unanticipated effect.

Explanation:

The concept of unanticipated effect can be defined as those consequences that are unitended or unanticipated in affect of certain actions taken by people-or government. The term was coined by Robert K. Merton.

When the government make certain decisions, they may produce certain consequences or effects that were not intended or intentional.

In the given case, the dependence of America on gasoline and diesel-powered vehicles have both negative and positive effects. These effects are not intended but are produced as a consequence of the actions of the government.

Thus the correct answer is unanticipated effect.

u = 30

continuing your method

= +

subtract from both sides

= - thus

= -

= ⇒ u = 30