Tiffany pays $40 for 160 minutes of talk time on her cell phone. hpw how many minutes
of talk time does she get per dollar?

Is it true or false i’m trying to pass this test so i can leave school

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20