Question: HI! just need some help with variance problems... it's making no sense to me !! Question 1: Var (-2Z) + 1 Question 2: E (-3X^2)

HI! just need some help with variance problems... it's making no sense to me !!

Question 1: Var (-2Z) + 1

Question 2: E (-3X^2)

the z for var is 1 and the x for E is -9

Thanks in advance!!

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