Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

How is the moon similar to a dollar?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

What does this rebus riddle means ?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

What goes up but never comes down?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

Can you count the number of squares in the figure below?

Can you find out the remainder when 3^300 is divided by 5?