A friend bought a house 15 years ago, taking out a $120,000 mortgage at 6% for 30 years, making monthly payments. How much does she still owe on the mortgage?

How many natural numbers n satisfy the inequality: 1/7 < n/10 < 4/5 ?

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?