12.46 the digits in the ones place and the hundredths place

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?

Write the pair of fractions as a pair of fractions with a common denominator

3c2 + 2d)(–5c2 + d) select all of the partial products for the multiplication problem above.