I need some help for two of the lines.

Step-by-step explanation:

I believe these are correct, but of course I could also be wrong, so please let me know.

Remember that if the shaded space is above the line then the sign will be either "greater-than" or "greater-than-or-equal-to", if the shaded space is below the line then it will be the "lesser-than" varients. You only use the greater-than sign when the line is dotted, and the greater-than-or-equal-to sign when it's not, and same goes for the lesser-than varients.

I hope the short explaination makes sense. If you need more help or don't understand something, please let me know. I'd be happy to help :)

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40