What would be the system of equations for y=-6+x, y=-2+z, and z=1-x. What would the solution be in points

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.

How do you determine whether a relationship represented as as graph is linear or nonlinear

How to simply and write the answer n a whole number