The cost of a large submarine sandwich at different restaurants divided evenly among 8 people

Here is another math questions. i will keep asking different questions. 4^2x=6

Whoever gets this right gets the ! the half life of a soul smelling substance is 4 years. if you have 8 oz of this strange substance, how much of it will you have after 20 years? show work.

Each side length of the hexagons is 1, what’s the area of abc