Answer:
a)
, b) 
Step-by-step explanation:
a) The indicator is equal to the ratio of total time to travelled distance:
Alex


b) In the case of Josh, the ratio must be greater than x. Then:


Answer:
3
Step-by-step explanation:
It is 3 because fi you multiply 5 by 3 you get 15, and if you multiply 10 by 3 you get 30. Subtract 30 by 6 and get 24. And finally, if you multiply 2 by 3 it gives you 9. 9+12= 21.
Answer:
a200
Step-by-step explanation:
Yeah, x= 7/2 and y= -5/2
Please mark as brainliest and I hope this helps