Answer:
10 or x=10
Step-by-step explanation:
First we can combine like-terms.
8x+6=86
Then subtract 6 from both sides
8x=80
Divide by 8
x=10
Answer:
44.58
Step-by-step explanation:

Answer:
z=100
Step-by-step explanation:
Opposite angles of an inscribed quadrilateral are supplementary.
180-80=100
Knowing that a ratio applies to the same situation in just a larger/smaller scale;
(13.5)(7)=x (where x is the predicted number of scores)
94.5=x
Therefore, the player should score 94.5 points in 7 games.
Hope I helped :)