Write the algebraic expression four less than the difference of a number and six

Geometry ? i don't know how to do any of these.

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%

Find the value of x. give reasons to justify your solutions! h ∈ ig