each of three students wrote an equation. • nikole wrote 5 2 = 21 8 4 • erik wrote 5.14 = 21 4 • keisha wrote 4 1 = 21 5 4 which of these students wrote an equation that is true? staar 2013 a. nikole only. b. nikole and erik only. c. keisha only. d. nikole, erik, and keisha