1: this year cornell's class took one more than three times as many field trips as last year's class. this year, cornell's class took a total of 7 trips. how many trips did his class take last year? 2: this week, jamyra spent a total of 100 minutes studying. this total was 8 more times more than four times the amount of minutes she studied last week. how many minutes did jamyra spend studying last week? 3: james earned a total of $900 last week. this total was $10 less than five times the amount he earned last week. how much money did james earn last week? 4: kaya rented a limousine for prom. there was a one time charge of $100, plus an hourly rate of $45. her total cost for the night was $347.50. how many hours did kaya rent the limo for? 5: at a pizza eating competition, davonne ate two more than twice as many slices as the runner-up. if davonne ate 11 slices, then how many slices did the runner-up eat? 6: anthony received $150 for his birthday this year, this was $10 less than half the amount received last year. how much money did anthony receive for his birthday last year? 7: jasmine is 5 years younger than twice her sister's age. if jasmine's sister is 22 years old, then how old is jasmine? 8: ronnie charged his customers a flat fee of $25 to fix computers. then he charged $20 for each hour that he spent fixing the computer. if ronnie made $175 off of his first customer, how many hours did he spend working?