Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?

Using Only Five 5's and any mathematical operator make sum as 37

By what process could you make a 'Tea-Table' into food?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

We have arranged an array of numbers below. What you have to do is use any kind of mathematical symbol you know excluding any symbol that contains a number like cube root. You can use any amount of symbols but you have to come up with a valid equation for all of them.

0 0 0 = 6
1 1 1 = 6
2 + 2 + 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

What has many teeth, but cannot bite?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

I am lying and I always lie. Tell me whether I am lying or telling the truth.