Solution :
In the first statement, the government institutes a legal minimum of 8 dollar is considered a price floor because it imposes the lower limit on market price. It is binding as the market price is lower at the price of 7 dollars.
In the second statement, it is a price floor as the statement speaks about minimum wage laws that are creating the unemployment. The minimum wages also imposes lower limit at market wage.
The third statement is a price ceiling as the upper limit on price has been imposed. This is not binding since the price is below ceiling price.