What’s the answer i need to kno how to solve

What’s the numerical coefficient of 6xy

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

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1