Astretch of highway that is 12\dfrac1412 4 1 12, start fraction, 1, divided by, 4, end fraction kilometers long has speed limit signs every \dfrac78 8 7 start fraction, 7, divided by, 8, end fraction of a kilometer.

answer: slight chance that it will happen

step-by-step explanation:

are ya tryin to ask something or is this a statement

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 !