Please help with this! i will mark the best answer brainliest. (image included)

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Can someone me i’m confused. will give brainliest and a whole bunch of points

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15