Need 1 and 2 solved, please help me, and give an explanation as to why.

Step-by-step explanation:

Only points A, D,  and B are on all three planes.

1) true, since it's line AB.

2)false,  since C is not part of M plane.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540