Please help, will medal and fan!

A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days:

f(n) = 12(1.03)n

Part A: When the scientist concluded his study, the height of the plant was approximately 16.13 cm. What is a reasonable domain to plot the growth function? (4 points)

Part B: What does the y-intercept of the graph of the function f(n) represent? (2 points)

Question

Please help, will medal and fan!

A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days:

f(n) = 12(1.03)n

Part A: When the scientist concluded his study, the height of the plant was approximately 16.13 cm. What is a reasonable domain to plot the growth function? (4 points)

Part B: What does the y-intercept of the graph of the function f(n) represent? (2 points)

anonymous · Answer

solve 
$$12(1.03)^n=16.13$$ by plugging in successive integers for $n$ until you get it
then the domain would be from 0 to that number

animeasgardian · Answer

Ok thanks!

anonymous · Answer

looks like about ten days http://www.wolframalpha.com/input/?i=12%281.03%29^10

anonymous · Answer

the y intercept is $(0,12)$ which represents the height of the plant when you start counting days