What is the lowest terms of 13/17 {this is a fraction that's just to let you know}

When are two distinct non vertical lines parallel

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4