What’s (3b+4)+(-2b-6)=?

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

Which of the following is the result of expanding the series

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2