So you think you can score?!?

This is a new game show! So you think you can score?! Well, solve this equations!!

ALGEBRA 

1) If 1 + x = 2
and 2 + x = 3
what's x?

2) If 2 x u = 2
and 1 x s = 1
what's us?

3) If u = 1
and s multiply u multiply c multiply k.
what's the total of all the following sums?

PROBLEM SOLVING

1) John had a lamb. Mary had a little lamb. There are some sheep on the ship. There are a total of 4 sheep. How many lamb do Mary has?

2) If a person wins, he get 2 points. If a person lose, he loses 2 points. Tom only had 0 points. Explain the reason why he has only 0.

SCIENCE

1) In order to photo-synthesis, what must be needed?

2) In order for plants to respire, what must be taken in first?

English

MCQ (Make choice questions)

1) ZG ____
(1) has no hope.
(2) sucks.
(3) down the drain.
(4) [All of the above.]

2) LRA ____
(1) has high hope.
(2) rocks.
(3) above the drain.
(4) [All of the above.]

ANSWERS WILL BE ON THE NEXT POST!!
P.S. DIRECTLY AFTER THIS POST!