Find a fraction between 3/4 and 4/5

How to solve it and what thw answer is

What can be said about the relationship between triangles and circles? check all that apply. a) many circles can be inscribed in a given triangle b) exactly one triangle can be inscribed in a given circle c) exactly one circle can be inscribed in a given triangle d) many triangular shapes can be circumscribed about a given circle

1. what is the formula for finding the vertical distance between two points on a coordinate plane?