Solve: 5x + 4y = 60
3x + 6y = 45

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

Solving algebraic equations 2m+3=11

Which of the following is a solution of z^6 = 64i? 2(cos105° + isin105°) 2(cos120° + isin120°) 2(cos135° + isin135°) 8(cos15° + isin15°)