How to solve x, for both questions ?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25

How does percent markup and percent discount relate to percent of change?

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