Part 1
the sixth term of a sequence is 128 and the common ratio is 2. use the explicit formula for a geometric sequence to find
the first term.
part 2
use the information from part 1 to write an explicit formula for the nth term of a geometric sequence. find the 21st term
of the sequence.
complete your work in the space provided or upload a file that can display math symbols if your work requires it. include
all of part 1 and part 2 in your answer.

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.