Question

I dont know how to solve it​

Answer 1

Just plug in 100 for x
2(100)+1
200+1
Answer
201
and then for 25
2x+1=25
2x=24
Answer
X=12

Answer 2

You did some of it wrong. I’ll explain the first one for example. Here, they give you the values of x and they want you to find y. They also give you an equation. So what you have to do is, replace x in the equation with the number they gave you, which is in the table.
For the first one, it’s y=2x+1 , and they gave you 0 for x. So what you need to do now is replace the x in the equation with 0. It would be
y=2(0)+1
y=0+1
y=1
So this means the answer for the first one is 1 and you just do the same process for the rest.
Here are the answers though:
1
3
5
7
9
201

As for the last one, they gave you the y and you need to find x. So you just replace too:
y=2x+1
25=2x+1
25-1=2x
24=2x
x=24/2
x=12

So I’ll put them again in order so you don’t get mixed up.
(These are the answers)
1
3
5
7
9
201
12