What is the main piece of computer software on which every other piece of software relies?

What is the inverse of the function f(x) = 2x + 1?

Ashley spent half of her lunch money on a turkey sandwich. then she spent two-thirds of the money she had left on a bottle of juice and the rest of the money on a cookie. if the cookie cost $.75, how much lunch money did ashley have to start with?

It takes 6 days to put together a computer game. write an algebra equation to describe the number of days, it takes to create n computer game. how many days will it take to create 15 games? show work