A certain element decays at a constant rate of \( 3 \% \) per year. If you start with \( 15 \) grams of the element, how long will it take before there are only three grams left?
Pregunta
Answer
15(1-0.03)\(^{n}\)=3
n\(\approx 53\)
Related Questions
Q:
Joe earns \( \$ 9 \) per hour. He worked \( x \) hours on both Wednesday and Friday, and \( 8 \) hours on both Tuesday and Saturday. Write an expression to represent how much Joe earned.
Q:
If a virus spreads at a rate that can be modeled by the exponential function \( A ( t ) = ae ^ { r t } \) , how many people will be infected after \( 5 \) days if initially \( 3 \) people are infected and the growth rate is \( 40 \% \) ?