X+2=2y then x = 2y - 2
3x-3 = 5y +1
substitute x = 2y - 2 into 3x-3 = 5y +1
3x-3 = 5y +1
3(2y - 2) -3 = 5y +1
6y - 6 - 3 = 5y + 1
y = 10
x = 2y - 2
x = 2(10) - 2 = 18
x = 18 y = 10
answer C. x = 18 y = 10 (Third choice)
Empirical probability is computed by running an experiment multiple times (in this case, asking the same question to many people), and then computing the ratio

In this case, 236 people over 991 said that they checked the portfolio daily, so the empirical probability is

Which you can round as 0.238, i.e. 23.8%.