One and seven tenths in decimal form

An apartment has a replacement cost of $950,000 and contents valued at $1,450,000. it has a classification of a and a territory rating of 3. find the annual premium a) $10,185 b) $9,230 c) $3,155 d) $13,830

Witch represents the inverse of the function f(x)=1/4x-12

W-16=-12 solve each one step equation plz