7th grade math help me plzzz

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

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

Rationalize the denominator- 12x/√x-10