Steps to solve -3x-2=13

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?

Abcd is a square. what is the measure of angle bac

The radius of a sphere is 3 inches. which represents the volume of the sphere?