I need help!! I dont get it

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

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.