Are the graphs of y=3/8x -5 and y=3/8x +2 parallel?

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Which of the following is the graph of y= square root -x-3