160 cm of gold wire has a weight of 17.8 grams.
Work out the weight of 210 cm of the gold wire.

the weight-to-length ratio of the gold wire:

the weight of 210cm gold wire:

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

h * s * a

h = history teacher

s = science teacher

a =   art teacher.

i see no data table, but just multiply the number of history teachers, science teachers, and art teachers.