It costs 30 pesos to enter a currency exchange building. once there, you can exchange 20 pesos for 1 dollar. how many pesos are required to get z dollars? (write your answer as an expression)

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Identify the number as a rational or irrational.explain. 127

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%