I believe you don't need to do any work at all except to divide everything by 25%.
I hope I helped you out!
Answer:
3 years
Step-by-step explanation:
540 = 4000 x 0.045x
540 = 180x
x = 3
Answer:
30%
Step-by-step explanation:
The probality is 30% because 70% + 30% = 100%
Answer:
x = 2
Step-by-step explanation:
First, let's write out our equation:

I want to isolate x on one side, so first, I'll add 4 to both sides to remove the -4 from next to 2x:

Notice that I combined like terms with the -4 and 4 (to get 0) and the 6 and 4 on the right side (to get 10). Next, I'll add 3x to both sides:

And then I'll add like terms:

Now, all we have to do is divide both sides by 5:

And there's our answer. Hopefully that's helpful! :)
1:A
2:H
3:C
4:B
Hope this helps :)