3(y+3)+7(2y-8)-(y-1)=0

We have this equation:

First, we do the parenthesis:

When there is a minus (-) in front of a parenthesis, all signs change inside it:

Now we operate:

We add 46 on both sides:

And divide 16 on both sides:

=

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

f(x) = y

f(-3) = -5

step-by-step explanation: