Here are some more:

Question

1.Use transformations to solve the equations:
5{6+k}=3k

19-3m+ 5+7m <0

2.Find the circumference of a circle with diameter 31 m.

3.What is 186% of 750?

Thanks!!
-MC

Answer 1

I got the third one: 1395
-MC

Answer 2

#2
circumference = pi(d)
= 31 pi or appr. 97.39 m

As I said before, I don't know what they mean by "use transformations" to solve

5{6+k} = 3k
I would just ...
30 + 5k = 3k
2k = -30
k = -15

and for
19-3m+ 5+7m <0
4m < -24
m < -6

Answer 3

Thank you Reiny!!
-MC

Answer 4

I asked my teacher and she said that #1 is actually k=30
Could you have gone wrong somewhere? That's the only one.
-MC

Answer 5

5{6+k} = 3k
I would just ...
30 + 5k = 3k
2k = -30
k = -15
----------------
This is correct. If the teacher's answer is different there is probably a typo.