Depends on what the fuel consumption of your vehicle is. As is, we have no idea if you're driving a Prius or an 18 wheeler.
around 2 days or 48 hours
Connecticut has no toll roads. The Massachusetts Turnpike (Mass Pike) has tolls east of Springfield, but what your specific trip would cost depends how much of your trip you spend on the Pike.
Not sure where in California or Connecticut but from Los Angeles to Hartford CT it would take 1 day and 19 hours. A total of 2895 Miles.
That drive can be made entirely on free highways -- no tolls
A drive from Las Vegas to Los Angeles would take about 70 hours.
Los Angeles is in California, so you answer would be no time at all.
Well, it has tolls and with traffic it would take 6 hours and 3 minutes.
Southwest
37 hours
1000.00
About 40 hours of driving time.
42 hours