So we are suppose to factor each expression, but i’m having trouble with that, can someone me?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries. what fraction of kathy’s money was left?

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