Answer:
Explanation:
A proportional relationship between two variables, x and y, is such that there is a constant of proportionality, k, that exists between the two variable, such that, y = kx.
Constant of proportionality (k) = y/x.
9) The relationship is proportional because 18% of dinner bill is being donated to local schools
So 18% of 50 is 9
So out of $50 of dinner bill, $9 will go towards donation.
10) No, the relationship is not proportional.
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