Answer:
so can't see the graph
Step-by-step explanation:
but if you can give a picture of the graph i could help out.

As we know, sum of interior angles of a triangle is 180°
that is ~
Hence, value of x is 9°
The percentage of reduction is 17%
<u>Explanation:</u>
Original price = $21
Reduced price = $17.43
Percentage of reduction = ?
Difference in price = $21 - $17.43
= $3.57
Percentage of reduction = 

Therefore, percentage of reduction is 17%
it is c. because the function is not a dependent or independent variable