Help me please and show work

2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

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.