Answer fast please

You can model the population of a certain city between 1955-2000 by the radical function p(x)=55,000 sqrt x-1945. using this model, in which year was the population of that city 220,000

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

If i have 20$ and i gave 5$ away how much i got