What is the maximum of f(x) = sin(x)? Negative 2 pi –1 1 2 pi

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

3x + 4y = 5 x- 3y = -7 solve by substitution

Astraight water slide is 175 feet above ground and is 200 feet long. what is the angle of depression to the bottom of the slide?