If x + y = 17 , what does y and x equal?

What is the 12th term of b(n)=-4-2(n-1)

The population of a small rural town in the year 2006 was 2,459. the population can be modeled by the function below, where f(x residents and t is the number of years elapsed since 2006. f(t) = 2,459(0.92)

Solve for the equation. 4x - 13 = 2x + 9