The Philadelphia Eagles keep finding solutions in some areas and problems in others.That has added up to a three-game losing streak going into a matchup with the Carolina Panthers on Sunday afternoon in Charlotte, N.C.The Panthers (3-1) are coming off their first loss, which brought to light their own areas of concern.Carolina’s defense was shredded by the Dallas rushing attack last weekend, causing serious issues for the Panthers. The Panthers’ pass rush, which had been so fierce, was ineffective. So that unit is bound to be on a mission.”We got to go out there and expect their best,” Eagles coach Nick Sirianni said of the Panthers. “We know they’re a talented defense.”Philadelphia quarterback Jalen Hurts has made certain strides. That has provided a level of comfort for the Eagles (1-3), but they need to produce throughout games.”I think anybody can go out there and make a splash play,” Sirianni said. “But can they do it week-in and week-out?”That will be a question confronting the Eagles.It’s a similar situation within the Carolina camp.”I want to be an even-keeled team,” Panthers coach Matt Rhule said, noting fluctuations.The Panthers have received strong production from quarterback Sam Darnold, who’s in his first season with the team.”I have a lot of confidence when Sam has the ball in his hands,” Rhule said. “We have to keep finding ways to protect him. Through the first four games, Sam is certainly further ahead of where I think a guy in the first year in the system would be.”The Panthers are focused on increasing the number of big plays, as they’ve missed chances to cash in on those.”That would be the next step for me,” Rhule said.That could be more difficult if running back Christian McCaffrey remains out of the lineup. He missed last Sunday’s 36-28 loss to the host Cowboys with a hamstring injury.