HELP FAST PLEASE!!!
1.) Classify the sequence as arithmetic, geometric, or neither. If there is not enough information to classify the sequence, choose not enough information.
(3,-1,1/3,-1/9)
2.) Write the first five terms of the geometric sequence with a1=-2 and common t=ratio r=-5/2
a.) (-2,-9/2,-7,-19/2)
b.) (-2,-5,-25/2,-125/4)
c.) (2,-5,25/2,-125/4)
d.) (-2,5,-25/2,125/4)
3. A rubber ball is dropped from the top of a building, which is 40 ft. above the ground. Each time the ball hits the sidewalk, it rebounds to 77% of its previous height. How high will the ball rebound after its sixth bounce? Round your answer to the nearest 10th.
a.) 8.3 ft
b.) 10.5ft
c.) 10.8 ft
d.) 1,230.0 ft