Which sequence are geometric? select three options.

Options 1, 2 and 4 are the correct answers.

Option A, B and D are Geometric sequence. 

Step-by-step explanation:

Given the sequence we have to choose the option which is an geometric sequence.

In G.P, the common ratio i.e r remains the same

Option A: -2.7, -9, -30, -100,...

which is same hence G.P

Option B: -1, 2.5, -6.25, 15.625,..

which is same hence G.P

Option C: 9.1, 9.2, 9.3, 9.4,...

which is not same hence not a G.P

Option D: 0.8, 0.08, 0.008, ..

which is same hence G.P

Option E: 4, -4, -12, -20,..

which is not same hence not a G.P

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points

your answer would be 12