Define stubs for the functions get_user_num() and compute_avg(). Each stub should print "FIXME: Finish function_name()" followed by a newline, and should return -1. Each stub must also contain the function's parameters.

Following are the code to this question:

def get_user_num():#defining a method

   return -1#return value -1

def compute_avg(n1, n2):#defining method compute_avg that accepts two parameters  

   return -1#return value -1

user_num1 = user_num2= get_user_num()#defining user_num1 and user_num2 variable that calls method get_user_num

avg_result = compute_avg(user_num1, user_num2)#defining avg_result that calls compute_avg method and store its value

print('The average value is:', avg_result)#use print method to call avg_result

Output:

The average value is: -1

Explanation:

In the given python code,  two methods "get_user_num and compute_avg" is defined, in which the second method "compute_avg" accepts two parameters that are "n1 and n2", and both methods will return its value, that is "-1".

In the next step, "user_num1 and user_num2" is defined, that calls method "get_user_num" and stores its value, and the variable avg_result is defined, which calls the "compute_avg" method and stores its value and use the print method is defined, that calls its value.

For the marigolds:
M= 150 (0.85) ^ x where x is the number of months
For sunflowers:
S= 125- 8x

Part B:
after 3 months there are 150 (0.85) ^3 =92 marigolds

after 3 months there are 123- 8*3 =99 sunflowers

PART C:

there are the same number of plants when the 2 functions are equal

So we have 150 (0.85) ^x =125-8x

They come close to being equal after 2 months and after 14 months