So ummm what was the answer ‍♀️

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?

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?