nanosecond, millesecond, second, minute, hour, day, week, fortnight, month, year, decade, century, millennium and multiples and variants of the above, e.g. two lunar months, one sidereal year, three solar years.
If a > 0, it is stretched, in the vertical direction, by the factor a If a = 1 it is unchanged If 0 < a < 1, it is shrunk bt the factor a If a = 0, it is coincident with the x-axis If a < 0 then as above, but it is also reflected about the x-axis (turned upside down).
279 700 through 799 is = 100 x70 - x79 for 10 in each century for another 90 (Don't double count the one in the 700 range) xx7 in each decade = 100 minus the 11 already counted above.
Typically, 90% and above is an A. An A plus is usually 97% and above.
It's 100 100 is the average IQ Above average IQ is therefore anything above 100 Above Above Average IQ is a non-standard term used in non-academic circles to refer to any IQ above 120, in other words the extremely gifted.