(¬p ∧ ¬q) → (r ↔ (s ∨ t)) truth table

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6

Which of the symbols correctly relates the two numbers below check all that apply 6? 6

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?