Question 310830
The domain is the 'x values' that result in a valid f(x). Many times, there will be no value for x that results in an undefined f(x). However, for this problem, the thing you need to note is that any value of x that makes 5x-14 = 0 will result in a fraction with a 0 in the denominator. Zero in a denominator is undefined. So the domain for this expression is 'All x except x=14/5'

Does that make sense to you?