Answer:
B
Step-by-step explanation:
We are given f(x) is height in cm while x is days old.
We are also given f(60)=210.
If you compare f(60) to f(x) you should see that x is 60 so we have the sunflower is 60 days old. Since f(60)=210, then you have the height of the sunflower is 210 cm tall.
Let

be the mean and

the standard deviation.
Joe's score tells you that

, while Jon's score says

. Solve this to get

and

.
Let me work on that problem then I’ll get back to you
Hi and hopes this helps:
Answer: 1/2