Enter the equation for the graph

y= ? cos (?x)

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

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.

Consider the sequence below. 3 , 1 , 1/3 , 1/9 , select the explicit function which defines the sequence.