Algebra Combining like terms

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It is a multiple choice test. I have placed my after the question. I am not asking anyone to do it for me I simply would like someone to check my answers and maybe if their nice tell me what went wrong on the ones i get wrong. Thanks!
1.) Combine Like Terms: 2
12 + 16 + 9x2
37x2
9x2 + 28
17x2
17x2 + 5
2.) 5b + 7b - b4 - 14b2 - 18b - 4b4 :3
-b4 - 14b3 -6b
-5b3 - 14b2 + 6b
-5b4 - 14b2 - 6b
-b4 - 14b2 + 6b
3.) 6r - 10r : 2
-4r
16r
16r2
16r4
4.) 15k + 17k + 3k + 19k - 2: 4
48k - 2
52k - 2
54k - 28
54k - 2
5.) 11d + 13d + 8d2 - 16 + 18d2 + 11d - 9d2 : 3
15d3 + 35d - 16
15d2 + 35d - 16
17d2 + 35d - 16
17d2 + 35d - 18
6.) 19g - 3g : 3
21g2
16g
21g
16g2
7.) 8n + 13 - 12n + 6n2 - 10 - 5n2: 2
2n2 - 4n + 3
n2 - 4n + 3
2n2 - 4n + 4
n2 - 4n + 4
8.) 15e - 7 + 4e2 - 17e + e2 : 1
5e2 - 2e - 7
e2 - 2e - 7
5e2 - 2e - 5
e3 - 2e - 7
9.) 14j2 - 2j + 18j2 - 9j + 14j4 + 16j - 11j2 : 2
12j4 + 21j2 + 5j
14j4 + 21j2 + 5j
12j4 + 21j4 + 15j
14j4 + 21j3 - 15j
10.) 13u - 6 + 2:4
11u - 4
11u - 2
13u + 4
13u - 4
11.) 19c3 - 15c + 5c3 - 17c2 + 7c4: 3
2c4 + 14c3 + 17c2 + 13c
2c4 + 24c3 + 17c2 - 13c
7c4 + 24c3 - 17c2 - 15c
7c4 + 4c2 - 17c2 - 13c
12.) 10 + 1 - 4 - 8h: 4
-8h + 7
8h + 7
-8h - 7
8h - 7
13.) 3p - 12 - 14 - 13p - 7 - 2 - 5p2: 1
5p2 - 10p - 35
-5p2 - 10p - 35
5p2 + 10p - 35
-5p2 + 10p + 35
14.) 3v + 4 - 10 + 18v - 16v:1
5v - 6
5v + 6
-5v - 6
-5v + 6
15.) 6y + 8y2 + 19y + 12:4
6y2 - 25y + 12
6y2 + 25y + 12
8y2 - 25y + 12
8y2 + 25y + 12
16.) 17m - 11m:2
6m2
28m
6m
28m2
17.) 1 - 15a + 9:1
15a + 10
-15a + 10
15a + 8
-15a + 8
18.) 18w + w + 5w2 - 13w + 7w - 3w3 - 15w2: 2
-3w3 +10w2 + 12w
3w3 + 10w2 + 12w
3w3 - 10w2 + 13w
-3w3 - 10w2 + 13w
19.) 19f2 + 14 + 2f2 + 11f + 8f2:1
29f2 + 11f + 14
29f2 - 11f + 14
2f2 + 11f + 14
9f2 + 11f + 14
20.) 17 - 12q - 6q2 - 16q - 9 + 10: 2
6q2 - 28q + 16
6q2 + 28q + 18
-6q2 - 28q + 18
6q2 - 28q + 18

Thank you for any help!

• Algebra Combining like terms -

The following problems are wrong
3: What's 6-10?
16: You added and you should have subtracted.
18: Completely wrong.
20: You only have one q^2 term, which is -6q^2, and only one choice starts with that..
**If you have something like 6-7x, when written the opposite way it becomes -7x+6. You got several wrong because of this.

• Algebra Combining like terms -

I re looked over the questions using your advice and got a better grade because of it. Thank you!

• Algebra Combining like terms -

You're welcome!

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