Answer:
I'm not sure, can you post any options?
Answer:
3000
Step-by-step explanation:
If they spend 60% of their income, they save 40% of their income
Let x be their income
x * 40 % = 1200
.40x = 1200
Divide each side by .4
x = 1200/.4
x =3000
Answer:
162 and 18
Step-by-step explanation:
use fractions make x 180 and do 9/10x and 1/10x
Answer:

Step-by-step explanation:
Use the circle equation, 
Plug in the center and radius:

Simplify:

So, the equation is 
You eliminate or ‘take away’ the answers that you know or think that r wrong. The last answer that’s left is your answer.