Yes, for every value of x, there is only one value of y. This means that y is a function of x.
_________X=30____
_________-________
Answer:
The standard form of a quadratic equation is:
, 
Quadratic Formula Derivation:



Completing the Square:


Square Root property:



The number of small chocolate-bars sold is 272.
<h3>What is a ratio? </h3>
Ratio expresses the relationship between two or more numbers. It shows the number of times that one value is another value. The sign used to represent ratios is :.
<h3>What is the number of small chocolate bars sold?</h3>
The number of packs small chocolate bars sold = (ratio of he number of small chocolate bars sold / sum of ratios) x number of chocolate bars sold
(5/7) x 95 = 67.8 = 68
The number of small chocolate bars sold = 68 x 4 = 272
To learn more about ratios, please check: brainly.com/question/25927869