Alright, I'll explain them as well.
1. The answer is 7, The open end of the sign is always to the larger number.
2. The answer is 4, and again, the open end of the sign is always to the bigger number.
3. The answers is two, and as before, 2 is the only number that will not make it negative or 0 and make the larger number be to the open end of the sign.
4. I'm not entirely sure on this one, so I won't answer it because I don't want to be the reason you get it incorrect.
5. For this one, divide 180 by 2.25, this will give you 80. The inequality should be 2.25k ≥ 180, k <span>≥ 80.
I hope this helps, have a nice day :)</span>
Answer:

Step-by-step explanation:
For the given equation :
Making the coefficients of x to L.H.S


Taking 3 as common from the above equation
Splitting the equation to make factors

Taking common from the equation:

Equating 'x' to zero

Answer:
We use it to substitute an unknown number. We have a variable for a number we don’t know and as we solve the problem we can find the answer for the variable or unknown number.
Step-by-step explanation:
I hope it helps! Have a great day!
Anygays-
3 slices are left because a quarter of the 8 is 2 so there is 6 left than 6-3=3 so 3 slices are left
8(1+3) and that is that answer easy