1/3 of a number represented as n

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

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