Answer:
Average rate of change = 10
Explanation:
Average rate of change = 
a = 2
f(a) = f(2) = (-2)² + 3(2) + 1 = 4 + 6 + 1
f(a) = 11
b = 5
f(b) = f(5) = (-5)² + 3(5) + 1 = 25 + 15 + 1
f(b) = 41
Thus:
Average rate of change = 

Average rate of change = 10
Bill will do none, because he is the teacher. Helena will do the math problems
Answer:
I think it's D. I and II only but I'm not sure...
Explanation:
Explanation:
Immanuel kant is a key thinker..
please mark me as brainlist...