JaylynnBenally5563 JaylynnBenally5563 28-12-2023 Mathematics contestada Given two independent variables x and y, where e(x) = -1, e(y) = 2, var(x) = 1, and var(y) = 2, calculate e(21x + 3y). a) -17 b) 1 c) 3 d) 19
