For a wrestler to qualify in his weight class, he needs to weigh more than 165 pounds but less than or equal to 185 pounds. he currenty weighs 189 pounds and is losing 0.5 of a pound per week. which models w, the number of weeks he should lose weight to be in the qualifying weight range?

To be in the qualifying weight range wrestler have to lose weight for 8 weeks more.

Explanation:

Current weight of Wrestler = 189 pounds

Maximum Weight required to get qualify = 185 pounds

Weight required to reduced by wrestler= 189 pounds - 185 pounds = 4 pounds

0.5 pounds is reduced in 1 week

1 pound will  reduce in = weeks= 2 weeks

4 pounds will reduce in = 2 weeks × 4= 8 weeks

To be in the qualifying weight range wrestler have to lose weight for 8 weeks more.

not too sure but maybe in the hot springs.