Circle b:
Diameter = x
Radius =

Area =

Circle a:
Diameter =

Radius =

Area =

Thus,
Area of circle b to area of circle a
=

÷

=

×

= 4
Hence, the area of circle b is
4 times the area of circle a.
Given the equation:

since both bases are 6, we can equate both exponents to get the following equation:

solving for x, we get:

therefore, the solution of the equation is x = 4
2.2=4
2.7=14
5-4+14-5=1+14-5=15-5=10
Good Luck!
The 63 dollars is the 35 percent, so you would need to times that by whatever to get your 100% or at least around that.
So 63=35%
Hope that helped because that's all I know