Question 1
Write the equation of the arithmetic sequence defined by a1 = 3 and a4 = 0. (write your answer in the form an= and please do NOT use spaces)



Question 2
What is the common ration of the sequence?
-2, 2, -2, 2,.



Question 3
What is the explicit formula for the sequence?

3, 6, 12, 24,.
a. an = 3*2^(n-1)
b. an = 2*3^(n-1)
c. an = 3*-2^(n-1)
d. an = 3^(n-1)


:confused:

Common ratio is -1 for the sequence -2,2,-2,2...