Plz help me out i will mark u as brainliest?

50 points~ ! i have to turn this in tomarrow

Y= a(x-3)squared-1 what is the value of a

An entertainment firm offer serveral dj choices and light shows that range in price based on the rental time period. the djs cost between $219 and $369 per night and the light shows cost between $159 and $309 per night. if you are booking both a dj and a light show write a compound inequality that represents the possible total amount you would pay x