Find the nth term of the geometric sequence whose initial term is a1 = 0.5 and common ratio is 10
(Your answer must be a function of n.)

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?

Is this a polynomial function? i need to know asap

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.