Jimmy is planning his birthday party! he spent $35 on balloons and chocolate cake. he bought balloons that cost $0.25 each and a chocolate cake for $10. he wrote the equation 0.25x+10=35 to represent the situation. explain what each piece of the equation represents and why the equation is in that order

Can some one me with these questions

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

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /