Need help ASAP please (w/ woking)

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

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