Answer:
D) The ratio of G’s to I’s is 2:1, because for every two G’s, there is one I.
Step-by-step explanation:
There are 4 G's and 2 I's, so for every 2 G's there's one I.
The rockets rate of change in miles per second is:
(5 - 1)/(2.5*60 - 30) = 1/30 miler per second or 0.033
the rockets rate of change in miles per minute is:
(5 - 1)/(2.5 - 30/60) = 2 miles per minute
Use equation of line which passes through the 2 points

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I was also going to say 6.25 but someone else did :)