Please help! I will make it worth your while.

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

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%