Can someone plz help me on this answer choices are at the bottom plz help

How do you solving the solution of each system using elimination?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%