21x + 28 = 156 - 2
21x = 154 - 28
21x/21 = 126/21
X = 6
6 is the highest common factor
The initial value is 3 (when x=0), and the multiplier is 2, when x=2. The equation can be written as
.. y = 3*(2^(x/2))
Answer:
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