Please help math cross puzzle ! Instructions: Complete the puzzle by entering numbers one through nine in each empty white cell. Each number will be used exactly once, and there’s only one unique solution that will satisfy all six equations.

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?

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals