You have a lot of questions here, try breaking them up into multiple posts and you may get more responses.
I will help with some.
<span>(x+3)=0
The solution is just -3.
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3m(m-4)=0
The two solutions are 0 and 4.
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(r-3)(r+2)=0
The two solutions are and 3 and -2.
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I hope this gets you started in the right direction.
Answer:

Step-by-step explanation:

Answer:
it has 3 terms and a degree of 5
Step-by-step explanation:
it is so eazy
Answer:
3/2 pages per hour
Step-by-step explanation:
1 : 2/3
= 3/2 : 1