Is it wasting too much gas?

Hello everyone new driver here… So I filled up my tank on sunday and today it got to half a tank. Last sunday I wasted $24 to fill up my tank when it reached half and today I wasted another $20. My question is does this seem about right? I used the odometer to calculate how many miles It last and half a tank only got me 91 miles. The past 4 days all i did was go back and forth from work and went to walmart and target. Anyways sorry if its a dumb question. Rav4 2010 btw