I think the answer is 16.8
Neither of them are functions. Functions cannot have two of the same numbers in the x value, and since the first table has two 5s in the x column and the second table has two 7s, neither of them can be functions.
Hope this helps :)
That is 62x9 which is 9x2=18 and 9x60=540 so you then add 540+18=558 chairs
so you can either do pounds per dollar or dollars per pound:
pounds per dollar : about 0.71 lbs / $
dollars per pound : $1.40 / lb
i hope this helped, based on the question i believe that it is dollars per pound but its good to know both and have a nice day
3,4,7 just plug the x into the equation