hi can i have help on these

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Time Romaining: 3:31:40 Hilda/Show Time Remaining Part 27 of 40 - Question 27 of 40 1.0 Points Discrete random variable X has V(X) = 4. Find o(6 - 2X). O A V20 O B. V52 O C. -16 O D. -4 OE4 Reset Selection Previous Next SaveTime Roraining: 3:31:4-4 Hide/Show Time Romaining Part 28 of 40 - Question 28 of 40 1.0 Pointa Let X' and Y' be discrete randomn variables with Y' = 1 + 3X. HE(Y) = 7, find E(X). O A 22 O B. 3 O C. 21 O D. 4 OE2 Reset Selection Previous Next Save MacBook Air