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Maths-

SAT

Easy

Question

What is an equation of the graph shown?

y = 3^x
y = 2(3)^x
y = 2^x
y = 3(2)^x

The correct answer is: y = 2(3)^x

The graph shown has y - value = 2 when x = 0
y - value = 6 when x= 1
y - value = 18 when x = 2
The initial value = 2, the common ratio = 3
The exponential function = y = (Initial value) (Common ratio)^x
y = 2(3)^x

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