-10grade/week
Explanation:
Given parameters:
Initial grade = 95grade
Final grade = 65grade
Time = 3weeks
Unknown parameter:
Rate of change of grade = ?
Solution:
Rate is defined as the change of a quantity with time.
Rate of change of grade = 
Rate of change of grade =
= 
Rate of change of grade = -10grade/week
The rate of change of the student's grade is -10grade/week. It implies that the grade of the student reduces by 10unit per week.
The correct answer is that the yolk provides nutrients for the embryo. Hope this helps.
This would be True. Hope I helped!
entire/whole
cytoplasm almost fills the entire cell. (any word that means the same or similar to entire or whole)