None of the answers on the math practice quiz for problem 44 are correct. The correct answer is 45.
When Ariel is doing her practice test for the PSAT, question #44 reads: "A father is three times as old as his son. After fifteen years, the father will be twice as old as his son's age at that time. Therefore, the father's current age is?" Although the correct answer is 45, the five choices given are: "A)4 B)8 C)16 D)32 E)64"
(at around 1h 45 mins) Allison DuBuois (Patricia Arquette) comes into Mr. Lydecker's (David Morse) (her new employer's) office and addresses him as "Mr. Rutherford." Mr. Rutherford (who does not appear) is the DuBois's oldest daughter's HS teacher, who, as it happens, is unable to teach class due to illness.