Answer:
its D
Step-by-step explanation:
Answer:
https://www.mathsisfun.com/adding-decimals.html
This has an explanation.
As x increases by 1 the value of f(x) doubles so we need 2^x
When x = 0 the value of f(x) = 3
The correct answer is f(x) = 3(2^x). [the top option]
The answer you are looking for is 780 millimeters