How do you know that the sum of -2 3/4 and 5/9 is rational?

Afunction is given: f(x)=3x+12 a. determine the inverse of this function and name it g(x) b. use composite functions to show that these functions are inverses. c. f(g(– explain: what is the domain?

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m