Josiah invests $360 into an account that accrues 3% interest annually. Assuming no deposits or withdrawals are made, which equation represents the amount of money in Josiah’s account, y, after x years?

Verified Answer :

y=360(1.03)x is the correct set up

aachen

Answer:

\(\text{y}=\$360\times(\frac{103}{100})^\text{x}\)

Step-by-step explanation:

Given: Josiah invests $360 into an account that accrues 3% interest annually.

To Find: Assuming no deposits or withdrawals are made, equation that represents the amount of money in Josiah’s account, y, after x years.

Solution:

Total amount in josiah's account after x years= \(\text{y}\)

Amount invested in account by Josiah = \(\$\) \(360\)

Interest accrued by josiah Annually      = \(3\) %

Total amount of josiah after 1 year        = \(\$360+\$360\times\frac{3}{100}\)

                                                                = \(\$ 360(\frac{103}{100})\)

Total amount after 2 years   =                  \(\text{Total amount after one year}\times\frac{103}{100}= \$360\times\frac{103}{100}\times\frac{103}{100}\)

                                                              = \(\$360\times(\frac{103}{100})^2\)

                                                                 

Therefore,

Equation of money in josiah's account after x years

                            \(\text{y}=\$360\times(\frac{103}{100})^\text{x}\)