This is a very common exam question so. It’s key you know this! Most exam boards will only require you to know two and the last one can be a little tricky, but if you’re up to the task it will impress your examiner for sure!#alevels2022 #alevel #aleveleconomics #alevelrevision #alevelresults #student #revision #aggregatedemand #economics #economicsalevel #economics101 #econ #econtok