Answer:
16
Explanation:
The x's go up by 1 (1, 2, 3, 4, 5)
The y's go up by 4's. 0, 4, 8, 12, 16
There is a rule to find the y's from the x's instead:
times by 4 and minus 4.
y = 4x - 4
y = 4(5) - 4
y = 20 - 4
y = 16
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