Answer:1 and 2
Step-by-step explanation:
Given
Volume needed 
For first cylinder





For second cylinder





For Third cylinder





For fourth cylinder





So, cylinder
and
are appropriate as it is under 
Answer:
Step-by-step explanation:
sorry for the photo quality but i dont hv aphone and use a laptop instead
Answer:
option a is the answer
Step-by-step explanation:
put the value of x in each expression as x = -2
you'll see that in option a the expression becomes

which is not defined. hence -2 is excluded value
I don’t know if you were asking for that cause my english is not that good but i hope that i helped you