Which of these people is part of the labor force?

an eighth-grader with a paper route
a retired salesperson
a full-time college student
an auto mechanic

which are ways that the economy is affected when the unemployment rate goes up? select all that apply.

fewer people pay income taxes.
sales tax rates go down.
many people refinance their houses.
less money is spent on investments.
people spend more money on larger items.

how has the standard of living in the united states generally changed over the past 100 years?

it has stayed more or less the same.
it has gotten much better.
it has gotten a little better.
it has gotten much worse.