Matt paid $55 at a restaurant. that amount included a 10% tip. what was the check amount before the tip?

Hi my sisters and brothers can tell me the answer because i don’t understand the question

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1