The graph below shows the relationship between the number of dollars x and the number of tickets you can buy y. Tell whether the
quantities are in a proportional relationship. If so write an equation that represents the relationship.
A. This relationship is proportional. The equation is y=1/12x.
B. This relationship is proportional. The equation is y= 12x+4.
C. This relationship is proportional. The equation is y=12x.
D. This relationship is not proportional
A. This relationship is proportional. The equation is y=1/12x.
B. This relationship is proportional. The equation is y= 12x+4.
C. This relationship is proportional. The equation is y=12x.
D. This relationship is not proportional
1 answer:
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well, we know that 213.90 includes the 15% gratuity, so if the meal price was say "x", namely that is the 100%, and we add 15% to that, then 100% + 15% = 115%, so 213.90 is really the 115%.
now, if 213.90 is the 115.%, what is "x"? the 100%.
so since we know the meal without the tip is 186 bucks, the tip was then 213.90 - 186 = 27.90.
but they got extra potato wedges with butter and the waitress was wearing her best hat, they added $20 more, so the tip ended up as 27.90 + 20 = 47.90.
now, if the cost of the meal was $186 and that is the 100%, what is 47.90 off of it in percentage?