Final answer:
The expression z(a,b,c) represents a function with three variables: a, b, and c. To find the equivalent when m(1,3,7), we substitute the values of m into the function.
Step-by-step explanation:
The expression z(a,b,c) represents a function with three variables: a, b, and c. To find the equivalent when m(1,3,7), we substitute the values of m into the function. So, the correct option is d) z(a+m,b+m,c+m), since we replace every occurrence of m with the values (1,3,7).