The probability (Yaaahuuu)mass function(pmf) of a discrete random variable X is given by the table below
x -3 -2 -1 0 1
P(X=x) 0.25 0.33 0.18 0.12 d

Correct to 2 decimal places, compute the value of:
a) The constant d =
b) P(−2 ≤ x ≤ 1) =
c) P(−3 ≤ x ≤ 0) =
d) P(x ≥ −1) =
e) E(x)=
f) Var(x) =
Given that Y = 16X +6, find:
g) E (Y) =
h) Var(Y) =​​