Last one can someone please help me

Brent wants to know what is 5 x 1/2

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

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%