For the years after 1965, the percent of people who say they trust the government always or most of the time can be approximated by y = 154 / x^0.5 where x is the number of years after 1960.

(a) Express this equation with radical notation.

(b) For the year 2020, what does this equation estimate as the percent of people who say they trust the government always or most of the time?

(c) What does this equation estimate as the change in percentage points during the decade from 1970 to 1980?