Write the doubles can you use to solve the problem 8 + 7

In what form is the following linear equation written y=9x+2

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

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)