Given conditions are :
In 1980's, a typical middle-income household earned= $34,757
In 2009, a similar middle-income household earned= $38,550
And we have to find relative increase in income for these households from 1980 to 2009.
So first we will find the total increase in amounts.

Relative increase = 
= 10.91% or rounding it off we get approx 11%.
Hence, the answer is 11%.
Answer:

Step-by-step explanation:
So we have:

And we want to solve for π.
First, divide both sides by h:

Now, divide both sides again by r²:

And this is our answer :)
Domain & range both zero. X intercept: 2,0. y-intercept: (0, 2)