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Sagot :
First, let's look at the points on the graph and find the pattern. The points given are (10, 5), (20, 10), (30, 15), and (40, 20).
Now, we need to calculate the relationship between the number of tickets sold (x-axis) and the money donated (y-axis).
To find the pattern, let's see the difference between consecutive x-values and y-values:
Difference in x: 20 - 10 = 10; 30 - 20 = 10; 40 - 30 = 10 Difference in y: 10 - 5 = 5; 15 - 10 = 5; 20 - 15 = 5
It seems like for every 10 tickets sold, $5 is donated.
Let's use this pattern to complete the table.
Tickets sold: 10, b, 30, 40 Money donated: a, 10, c, d
Now, applying the pattern, we can fill in the table:
a = 5 (since for 10 tickets sold, $5 is donated) b = 20 (10 + 10 = 20, as 20 tickets are sold) c = 15 (10 + 5 = 15, as 30 tickets are sold) d = 20 (10 + 10 = 20, as 40 tickets are sold)
So, the completed table is as follows:
Tickets sold | Money donated 10 | 5 20 | 10 30 | 15 40 | 20
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