
a

b

c

d

e

f

g

1

r = 2

r = 0.5

Not geometric

r = 0.8

r = w

r = √3

r = 3

2

160, 320

1.25, 0.625

Not geometric

40.96, 32.768

w^{5}, w^{6} 
9, 9√3

243, 729

3

1024

0.5625

8192

47.59 (4s.f.)

0.00390625

1397.5

1048576z^{21}

4

2^{n}

3^{n}

q x 3^{n − 1}

6 x (1)^{n1}

5. r = 2, a = 0.5 and the sequence is 0.5, 1, 2 ,4, ...
6.r = 1/3, a = 27 and the sequence is 27, 9, 3, 1, ...
7. 768 is the 8th term.
8. 4096 is the 7th term.
9. He would be doing 32 768 pressup and probably be very fit... or dead!