Half-Life Question

Question

A. The half-life of radium-226 is 1620 years. If the initial quantity of radium is Q₀, write a formula for the quantity, Q, of radium left after t years.

B. What percentage of the original amount of radium is left after 310 years? (Round to one decimal place)

Answer 1

Q = Q₀(0.5)^{(t / 1620)}

Q₃₁₀ = Q₀(0.5)^(310/1620)

Q₃₁₀ = Q₀(0.5)^(310/1620)

Can you calculate and answer?