PLEASE HELP! I'D REALLY APPRECIATE AN ANSWER FOR BOTH!!

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

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%

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal