Question

Use the graph of the exponential growth function f(x) = a(2x) to determine which statement is true. f(0) = 2 when a =1/2 . f(0) = 3 when a = 3. f(1) = 9 when a = 9.

Answer 1

Math symbols were invented for a reason. They help communicate your intent. Here, it looks like you may intend

... f(x) = a(2^x)

When x=0, this will have the value "a". When x=1, this will have the value a^2. The appropriate selection is

... f(0) = 3 when a = 3