Does anyone know an easy was to simplify radical expressions

Football player weighed 170 2/3 pounds in may. during the summer he gained 25 5/12 pounds. during the first week of fall practice he lost 10 1/4 pounds and during the second week he lost another 3 1/2 ponds. how much does he weigh at this point? a.182 1/3ib b.181 1/2ib c.182 5/12ib d.183 2/3ib

Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year? f(n+1)=f(n)+5

The radius of a sphere is 3 inches. which represents the volume of the sphere?