Which function represents this sequence? The explicit formula for a geometric = 21(r)n-1 function is an 1 n 2 3 4 5 3 an 6 12 24 48 Of(n) = 2n-1 Of(n) = 3n-1 Of(n) = 3(2)1-1 Of(n) = 2(3)n-1​

Peachy Orchard Developers are preparing land to create a large subdivision of single-family homes.  They have already built 15 houses on the site.  Peachy Orchard plans to build six new homes every month.  Write a sequence for the number of houses built, then write an equation for the sequence.  Fully describe a graph of this sequence.  The sequence is 21, 27, 33, 39,  Note that sequences usually begin with the first term, where the number of months n =1.  

answer: median

step-by-step explanation:

the median is the middle value when a data set is ordered from least to greatest