What is 12/5 in percent ?

Your client has saved $1,860 for a down payment on a house. a government loan program requires a down payment equal to 3% of the loan amount. what is the largest loan amount that your client could receive with this program

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x

How is this equation completed? i cannot find any examples in the book.