1999 Nissan Altima Takes a long time for it to start.

Engine Mechanical problem
1999 Nissan Altima 4 cyl Front Wheel Drive Automatic

My car is now getting harder and harder to start.I was told I had to pump the gas pedal as I start the engine. But it still takes a while until it starts. Is it the fuel pump? And how much would it cost me to get that repaired? Thank u