20. There are a total of 15 apartments in two buildings. The difference of two times the number of apartments in the first building and three times the number of apartments in
the second building is 5.
a. Write a system of equations to model the relationship between the number
of apartments in the first building fand the number of apartments in the second .
building s.
b. How many apartments are in each building?

$655.61 which is option c

step-by-step explanation:

price of house =   $146,000

initial rate = 3.5%

mortgaged paid in this = 3.5 % of $146,000

                                        =

                                        =$5110

the total years would be = 7

total mortgaged paid = 7 * $5110

                                      =$35770

remaining money = $146000-35770

                                =$110230

new mortgaged payment = 5 % of 110230

                                            =  

                                            =$655.61