What is the difference between currency and money supply?

Currency is the system of money that you use, for example: the US uses Dollars and the UK uses Pounds. Money supply is how much currency is in circulation in the country.

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b

determination