Additive verse x+18=24

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?

Which math sentence can be used to determine if the triangle is a right triangle?

The only way to identify an intercept is as an ordered pair. true false