C when finding x you are left with 6600/5280 which equals 1.25. Also by looking at the answer choices c is the only reasonable option since 5280=1 the answer would need to be larger than 1
7 mph. 28 divided by 4 is 7. Or 7 miles in one hour
I think that 0 is rational, as it always is. The answer is D. I am not sure, but I hope it helps.
1 meter = 1000 mm
so then 5 meters is just 5 * 1000 = 5000 mm.