The fact that we cannot have everything we want is caused by scarcity benefits trade-offs demand

The correct answer is the option ''scarcity''.

Step-by-step explanation:

In economics, the scarcity represents the main problem of the science. The economic sciences are focus on encounter the solution to the scarcity and the proper and correct administration of the finite resources to the increase number of population. Therefore that most humans can not obtain whatever they want, because of scarcity, that means that there are not enought resources of everything for everyone. Therefore that to that end, the economic science need to seek for the better way to redistribute the limited resources to the whole population.

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )