A basketball costs $32.00. The sales tax rate is 7%. Find the amount of sales tax

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

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

How do you use the elimination method for this question? explain, because i really want to understand!