If 16=35 but 27=12, how much is 13?

We can set this up as a linear equation using the points (16,35) and (27,12)

So, let's find the slope (m) and write the equation of the line

(35-12)/(16-27) = 23/-11 = m

So, in point-slope form, we have

y - 12 = (-23/11)(x - 27)

y = (-23/11)x + 621/11 + 12

y = (-23/11)x + 753/11

So, for x = 13, we have

y = (-23/11)(13) + 753/11 = 454/11 = about 41.27  where the "27" repeats

Note.....there may be other functions that would also model the original situation and possibly produce a different result for x = 13 !!!!