How do i solve this system by graphing?

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

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

What are the sotions to the quadratic equation 9x^2=4