Answer:
The correct answer is 32.5
Answer:

Step-by-step explanation:
Since the fractions are like, their denominators are 11, then
consider the values that sum to give 18 , that is
1 + 9 + ? = 18
10 + ? = 18 ( subtract 10 from both sides )
? = 8
Then the third fraction is 
Answer:
5(x+3)=2
Step-by-step explanation:
It is a rectangular pyramid
should i explain?
fell free to tell me if it doesn't make sense :)