First one is the second answer.
(-3 < x < 0)
Second one is also the second answer.
(x < 5 or x > 11)
Third one is the second answer and the last answer
(5 + 6x < 13)
(5 + 6x > -13)
(2a*5)-3 is the answer best way to say it can't explain
So what is given is:
length = 1.9 * w, you want to convert this to w = ...
This is done by dividing left and right by 1.9, so you get:
length/1.9 = 1.9*w/1.9, which simplifies to w = length/1.9
Another approach is to replace the multiplication with a simpler one in your head. So in stead of reading "length = 1.9 * width, what is width?", you read "6 = 2*3, what is 3?". You'll immediately realize 3 = 6/2, and that shows you how to change the real equation, ie., width = length/1.9.
1. 2
2. 1
3. 6
I'll post the rest in the comments
