hi can i have help on these

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Hide/Show Time Remaining Part 23 of 40 - Question 23 of 40 1.0 Points Find the expected value of the discrete random variable X whose probability distribution function (pdf) is shown here. Pr[X = x] -3 1 -2 -1 OAI O B. _ 21 11 O C. -2 OD. 32 121 OE 43 11 Reset Selection MacBook AirTime Remaining: 3:32:06 Hide/Show Time Remaining Part 24 of 40 - Question 24 of 40 1.0 Points Find the variance of the discrete random variable X whose probability distribution function (pdf) is shown here. x Pr[X = x] -2 Uil- 0 O A. OB. O C. OD. -1 O E. 1 Reset Selection MacBook Air