Identify the first term of the algebraic expression. Indicate whether the term is a variable or a constant term. 5y + 8b

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?

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Which shaded region is the solution to the system of inequalities? y y[tex]\geq[/tex]-x+1