Can someone please help

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 expression is equal to (f+g)(x)?

Choose the correct translation for the following statement. it is at most ten. x< 10 x< 10 x> 10 x> 10