Enter the value of p so the expression 4(n+7) is equivalent to (n+p)4

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

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?

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2