The Solution:
Given that the mortgage value is $170,000, and 1/5 of the mortgage value as Down Payment.
a.
We are asked to find the Down Payment.
![\text{ Down Payment=}(1)/(5)*170000=\text{ \$34,000}](https://img.qammunity.org/2023/formulas/mathematics/college/d4uqgoomr2ccey9naqweo4blwfgoy50yig.png)
Thus, the Down Payment is $34,000
b.
The amount (in dollars) of the mortgage that Bradys is applying for is:
![\text{ Amount of Mortgage =170,000-34,000}=\text{ \$136,000}](https://img.qammunity.org/2023/formulas/mathematics/college/etz4q1plo4q839ktr0pth64lhhomyxpzjd.png)
Therefore, the amount (in dollars) of the mortgage that Bradys is applying for is $136,000
c.
For every $1000, the interest rate charged is $5.37.
So, for $136,000, Bradys is requesting for
![\begin{gathered} \text{ \$1000 = \$5.37} \\ \\ \text{ \$136,}000=136*5.37=\text{ \$730.32} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/jrz64v13ua5rk8i059hugk0h48toy9ybqp.png)
Therefore, the amount for Bradys' monthly payment of the principal and the interest is $730.32
d.
The total amount of interest that will be paid over the life of the loan is:
![\text{ Total Interest = Total Payment - Total Loan}](https://img.qammunity.org/2023/formulas/mathematics/college/hrd4cottgteqt8wfr36hkrhdydxputcnjj.png)
In this case,
![\begin{gathered} \text{ Total payment=payment for 30 years=monthly payment}*12*30 \\ \\ \text{Total Payment =730}.32*12*30=\text{ \$262915.20} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/wvp5ijtmp1t7b7vddw46tpapsqsdlvm9b8.png)
Total Loan = $136,000
So,
![\text{Total Interest =262915.20 - 136000 = \$126915.20}](https://img.qammunity.org/2023/formulas/mathematics/college/xdmfosql6jyvp7htg92xdubiwpzbdl6jy6.png)
Thus, the total amount of interest paid over the life of the loan is $126915.20
e.
The total monthly payment that include principal, interest, property tax and property insurance is calculated as below:
![\text{ Monthly payment of property tax =}\frac{\text{ Yearly tax}}{12}=(1710)/(12)=\text{ \$142.50}](https://img.qammunity.org/2023/formulas/mathematics/college/qi7kaxtvqj02vj9esxfgv9nsdnoc5mlz7z.png)
![\begin{gathered} \text{ Monthly payment of property Insurance =}\frac{\text{ Yearly insurance charge}}{12}=(1458)/(12) \\ \\ \text{Monthly payment of property Insurance = \$121.50} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/6lqbb3xurg1s2qmqgrdv3wy2nbynl567a6.png)
![\text{Monthly payment of principal and interest = \$730.32}](https://img.qammunity.org/2023/formulas/mathematics/college/2zm064nyeqc8wh4icdjk7fj0i7plolqxt2.png)
Thus, the total monthly payment is
![730.32+121.50+142.50=730.32+264=\text{ \$994.32}](https://img.qammunity.org/2023/formulas/mathematics/college/5v00k4qvlesirxuiylxat1p7m7luj85hqk.png)
Therefore, the total monthly payment is $994.32
f. Not needed by the user.
g.
Given that to qualify for the mortgage payment, 1/4 of the family monthly income must exceed the monthly payment for the mortgage loan.
The range of monthly income of $4000 and above is required to qualify for this size mortgage payment. This is because:
![\begin{gathered} (1)/(4)*4000=\text{ \$1000 } \\ \\ \text{ Monthly payment = \$994.32} \\ \text{ Since 1000 > 994.32} \\ It\text{ follows that \$4000 is enough to qualify one for the mortgage loan.} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/kwbfp59tb9irj1ozbt9dj1yglpcpp7pala.png)
Therefore, a monthly income of $4000 is good