To solve this we are going to use the formula for simple interest: [tex]A=P(1+rt)[/tex]
where
[tex]A[/tex] is the final amount
[tex]P[/tex] is the initial amount
[tex]r[/tex] is the interest rate in decimal form
[tex]t[/tex] is the time in years
We know for our problem that [tex]P=185000[/tex] and [tex]t=30[/tex]. To convert the rate to decimal form, we are going to divide it by 100%
[tex]r= \frac{4.3}{100} [/tex]
[tex]r=0.043[/tex]
Now that we have all we need, lets replace the values in our formula to find [tex]A[/tex]:
[tex]A=P(1+rt)[/tex]
[tex]A=185000[1+(0.043)(30)][/tex]
[tex]A=423650[/tex]
We can conclude that after 30 years Jane will have paid $423,650 for her home.