Question

PLEASE HELP I DON'T KNOW HOW TO SOLVE THIS.

Answer 1

Explanation

• Find the domain.

To find the domain from the graph, you have to focus only x-axis because domain is the set of x-value.

From the graph, we can see that domain starts at x = 0 and keeps going and going positive infinitely. That means the domain must be greater or equal to 0.

Here is an easier way to understand

`\large \boxed{ \sf{left/start}} \Longrightarrow \large \boxed{ \sf{right/end}}`

`\large \sf{left = 0} \\ \large \sf{right = + \infin}`

And if we combine both, we get

`0 \leqslant x \leqslant + \infin`

But we don't usually write positive infinity, therefore we convert to

`0 \leqslant x \longrightarrow x \geqslant 0 \\ x \geqslant 0`

Answer

`x \geqslant 0`

If you have any questions related to this answer, feel free to ask in comment.

Answer 2

Answer: b

Explanation:

X is defined for all numbers on the domain starting at x=0. It doesn’t show or mention a cutoff/equation in the picture so it’s safe to assume it continues forever

Answer 3

Explanation

• Find the domain.

To find the domain from the graph, you have to focus only x-axis because domain is the set of x-value.

From the graph, we can see that domain starts at x = 0 and keeps going and going positive infinitely. That means the domain must be greater or equal to 0.

Here is an easier way to understand

`\large \boxed{ \sf{left/start}} \Longrightarrow \large \boxed{ \sf{right/end}}`

`\large \sf{left = 0} \\ \large \sf{right = + \infin}`

And if we combine both, we get

`0 \leqslant x \leqslant + \infin`

But we don't usually write positive infinity, therefore we convert to

`0 \leqslant x \longrightarrow x \geqslant 0 \\ x \geqslant 0`

Answer

`x \geqslant 0`

If you have any questions related to this answer, feel free to ask in comment.