Arational expression is undefined when the denominator is zero true or false ?

True A rational expression is undefined whenever its denominator is zero. By definition, a rational expression is an expression that can be in the form x/y where x and y are integers and y is not equal to zero. This definition of a rational expression strictly excludes denominators of zero.

2015 they have a perecent

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.