Aman invested $16,000. he invested a portion at 6% and the balance at 8%. if he receives $260 every 3 months, how much did he invest at each rate?

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?

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)