When 7 is subtracted from 3 times a number n, the result equals 5. Which of the following equations
represents this statement?

  3 times a number - 7 equals 5

  3n - 7 = 5

12.5 feet

step-by-step explanation:

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)