Answer:
y=-7x+48 slope would be -7
Step-by-step explanation:
Used a Regression Calculator
Answer:

Step-by-step explanation:



Substitute
into second equation:




Substitute
and
into the third equation:



Substitute
into
:

Plug in y and z values into
:

Answer:
yes, yes
Step-by-step explanation:
B={1,2,3} it doesn't matter if it has ten 2's or one!
so A=B and A⊆B
It’s 20 % hope that helps!
I don’t know the answer yet, I’ll reply to my comment with it, but merry Christmas to you too!!