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When the price of pencils increases from $1.50 to $2.50, there is an increase in quantity demanded of pens from 100 to 150. the cross-price elasticity of demand between pencils and pens is: ?

The average cost of one year at a private college in 2012-2013 is $43,289. the average grant aid received by a student at a private college in 2012-2013 is $15,680.what is the average student contribution for one year at a private college in 2012-2013?

Use the drop-down menus to complete each sentence. according to the theories of friedrich august von hayek, the economy may be too complicated to think in terms . hayek believed was dangerous and could lead to severe inflation. milton friedman supported changes policy to influence economic growth.answers : aggregates; expansionary policy; monetary