UNLV pre-nursing freshman Jorge “Fabian” Trejo-Ibarra, right, works on a problem with fellow st …

UNLV pre-nursing freshman Jorge “Fabian” Trejo-Ibarra, right, works on a problem with fellow student Laura Torres-Ayon in professor Bob Ain’s math class on Friday, Sept. 11, 2020, in Las Vegas. (L.E. Baskow/Las Vegas Review-Journal) @Left_Eye_Images