The median for the given set of six ordered data values is 27.5.
5 12 23 41 51
what is the missing value?
the missing value is

it would open into a square depending on the type of envelope i’m not sure about the second part

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !

not sure srry man