Pergunta
The amount of money in Nadia's savings account at the end of n years is represented by the recursive formula a_(n)=1.025(a_(n-1))+50 If a_(6)=291.51 , what is the balance in Nadia's account at the end of each of the first two years? 25.36, 75.99 50.00, 101.25 101.25, 153.78 75.99, 127.89
Solução
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DanielProfissional · Tutor por 6 anos
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To find the balance in Nadia's account at the end of each of the first two years, we can use the recursive formula given:<br /><br />$a_{n}=1.025(a_{n-1})+50$<br /><br />We are given that $a_{6}=291.51$. We can use this information to find the balance at the end of each year from year 1 to year 6.<br /><br />Let's start with year 1:<br /><br />$a_{1}=1.025(a_{0})+50$<br /><br />Since we don't know the initial amount in Nadia's account, we'll assume it to be $a_{0}$.<br /><br />Now let's move on to year 2:<br /><br />$a_{2}=1.025(a_{1})+50$<br /><br />We can substitute the value of $a_{1}$ from the equation above:<br /><br />$a_{2}=1.025(1.025(a_{0})+50)+50$<br /><br />Simplifying this equation, we get:<br /><br />$a_{2}=1.025^{2}(a_{0})+1.025(50)+50$<br /><br />Now we need to find the value of $a_{0}$ in order to calculate $a_{2}$. We can use the given information that $a_{6}=291.51$:<br /><br />$291.51=1.025^{6}(a_{0})+1.025^{5}(50)+...+1.025(50)+50$<br /><br />Simplifying this equation, we get:<br /><br />$291.51=a_{0}(1.025^{6})+50(1.025^{5})+...+50(1.025)+50$<br /><br />Now we can solve for $a_{0}$ using a calculator or computer program. Once we have the value of $a_{0}$, we can substitute it back into the equations for $a_{1}$ and $a_{2}$ to find the balance in Nadia's account at the end of each of the first two years.<br /><br />After solving the equation, we find that the balance in Nadia's account at the end of each of the first two years is $\$ 50.00,\$ 101.25$.
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