A national health<span> insurance </span>system<span>, or single-payer </span>system<span>, in which a single government entity acts as the administrator to collect all </span>health care<span> fees, and pay out all </span>health care<span> costs. Medical services are publicly financed but not publicly provided. Canada, Denmark, Taiwan, and Sweden </span>have<span> single-payer </span>systems<span>.</span>
Answer:

Explanation:
This is an algebra question about fractions.
You need to find 3/10 of the income, and the income is $44,000.
You must muliply the fraction 3/10 by the $44,000 income.
To multily one fraction by a whole number you convert the whole number to a fraction with denominator 1. Then multiply numerator with numerator and denominator with denominator. This is how:

Answer: $116
Explanation: Opportunity cost refers to the loss of profit by an individual or a firm when one chooses to go for best alternative instead of the second best alternative.
In the given case, John has two alternatives and if he chooses to go on the trip it would cost him the loss of $116 salary that he receives.
Thus the opportunity cost of going on the trip would be $116.