What is the measure of b

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

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

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.