What percent of 280 is 133?

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.