What is 9/10 - 2 3/4 i. the simplest form

−1.85 it says too short so ignore this ndjbdbjddn

can i know which language is this?

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !