Can Someone help me please

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.

Can someone me and explain..will award brainlest!

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter?