Express, correct to three significant figures, 0.003597. 

Evaluate: (0.064) - \(\frac{1}{3}\) 

Solve: \(\frac{y + 1}{2} - \frac{2y - 1}{3}\) = 4

Simplify, correct to three significant figures, (27.63)\(^2\) - (12.37)\(^2\) 

If 7 + y = 4 (mod 8), find the least value of y, 10 \(\leq y \leq 30\)