[math]X[/math] is a random variable with [math]E(X) = 100[/math] and [math]V(X) = 15[/math]. Find

• [math]E(X^2)[/math].
• [math]E(3X + 10)[/math].
• [math]E(-X)[/math].
• [math]V(-X)[/math].
• [math]D(-X)[/math].