Answer:
a n=1/2 an - 1
Step-by-step explanation:
64,32,16,8,4. is a geometric sequence. this is a sequence where, to get from one term to the next, there is a number that you have to multiply it by. this is the same for all parts of the sequence.
the answer would be -6
56m^2
see the steps from the pic
Answer:6 weeks
Step-by-step explanation: 5, 10, 20, 40, 80, 160
you don't because its not relivant
