Can someone help me solve this question? 16-20 step by step Thanks! 16. Derek drove 18 miles to the airport to pick up his sister and then returned home. On thereturn trip he drove two times faster then he did on the trip there. If his total driving timewas 1 hour, what was his driving speed to and from the airport?17. John started a race running at a speed of 6 mph. Half an hour later, Kyle started running therace (from the same start position), at a speed of 7 mph. When will Kyle catch up to John?18. y varies directly as x and y = 84 when x = 12. Find y when r = 17.19. a varies inversely as b and a = 42 when b 4. Find a when b= 6.20. The amount of gallons of gasoline a car uses varies directly to how many miles it travels. If acar uses 15 gallons of gasoline while traveling for 400 miles, how many gallons of gasoline willit use if it travels for 550 miles?

Answered: Image /qna-images/answer/0e244f58-515b-40a4-a0df-2c2061842d70.jpg

16. Derek drove 18 miles to the airport to pick up his sister and then returned home. On return trip he drove two times faster then he did on the trip there. If his total driving ti was 1 hour, what was his driving speed to and from the airport? 17. John started a race running at a speed of 6 mph. Half an hour later, Kyle started running t race (from the same start position), at a speed of 7 mph. When will Kyle catch up to Joh 18. y varies directly as r and y = 84 when x = 12. Find y when r = 17. 19. a varies inversely as b and a = 42 when b= 4. Find a when b= 6. 20. The amount of gallons of gasoline a car uses varies directly to how many miles it travels. If car uses 15 gallons of gasoline while traveling for 400 miles, how many gallons of gasoline wi it use if it travels for 550 miles?

16. Derek drove 18 miles to the airport to pick up his sister and then returned home. On return trip he drove two times faster then he did on the trip there. If his total driving ti was 1 hour, what was his driving speed to and from the airport? 17. John started a race running at a speed of 6 mph. Half an hour later, Kyle started running t race (from the same start position), at a speed of 7 mph. When will Kyle catch up to Joh 18. y varies directly as r and y = 84 when x = 12. Find y when r = 17. 19. a varies inversely as b and a = 42 when b= 4. Find a when b= 6. 20. The amount of gallons of gasoline a car uses varies directly to how many miles it travels. If car uses 15 gallons of gasoline while traveling for 400 miles, how many gallons of gasoline wi it use if it travels for 550 miles?

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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Can someone help me solve this question? 16-20 step by step Thanks!

16. Derek drove 18 miles to the airport to pick up his sister and then returned home. On the
return trip he drove two times faster then he did on the trip there. If his total driving time
was 1 hour, what was his driving speed to and from the airport?
17. John started a race running at a speed of 6 mph. Half an hour later, Kyle started running the
race (from the same start position), at a speed of 7 mph. When will Kyle catch up to John?
18. y varies directly as x and y = 84 when x = 12. Find y when r = 17.
19. a varies inversely as b and a = 42 when b 4. Find a when b= 6.
20. The amount of gallons of gasoline a car uses varies directly to how many miles it travels. If a
car uses 15 gallons of gasoline while traveling for 400 miles, how many gallons of gasoline will
it use if it travels for 550 miles?

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