The espression 4x^2-4x-120 is equivalent to?

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Which diagram shows lines that must be parallel lines cut by transversal?

The average length of a king cobra is 3.7 m. the record length is 1.88 m longer than the average. how long is the record holder?