How can you use scale models to solve problems

What is the factored form of the following expressions? d^2 – 13d + 36

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

Frank owns a $141,000 home, for which he has a 30-year mortgage in the amount of $700 a month. once he has paid off mortgage, how much will he have paid in investment? a. $111,000 b. $109,000 c. $120,000 d. $141,000