I am having a lot of trouble with these questions please help me

7:42 4 .III "3' [1' webassign.net I. [1.68/5 Points] DETAILS PREVIOUS ANSWERS LARCALC MY NOTES | ASK YOUR TEACHER PRACTICE ANOTHER Consider the following function. f0!) = IX - 7| Find the derivative from the left at x = 7. If it does not exist, enter NONE. -x Find the derivative from the right at x = 7. If it does not exist, enter NONE. -" Is the function differentiable at x = 7? 0 Yes 0 No a! Need Help? Show My Work (Optional) 0 Submit Answer Home My Assignments Requ 7:47 4 AA webassign.net C question parts. The numbe remaining for each questio you submit or change the Assignment Scoring Your best submission for e used for your score. [-/5 Points] DETAILS LARCALC11 2.1.078. MY NOTES Describe the x-values at which the function is differentiable. (Enter your answer using interval notation.) x2 y = . x2 - 25 10 5 LX -10 -5 -un- 10 -5 -10 Need Help? Read It + Show My Work (Optional) ? Submit Answer View Previous Question Question 15 of 20 View Next Question Home My Assignments + Request Extension 0 Need Help? _ E! Show My Work [Optlonan 0 Question 150m |:Quest Home My Assignments Request Extension 7:484 a webassign.net For this a question remainin you subn Assignm Your best used for [-/5 Points] DETAILS LARCALC11 2.1.069.MI.SA. This question has several parts that must be completed sequentially. If you skip a part of points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise Use the alternative form of the derivative to find the derivative at x = c (if it exists). f ( x ) = x2 - 4, C = 7 Step 1 The alternative form of the derivative states that f ( x ) - FC f '(c) = lim X - Submit Skip (you cannot come back) Need Help? Read It Watch It Show My Work (Optional) Submit Answer View Previous Question Question 12 of 20 View Next Home My Assignments + Request Extensio7:47 4 a webassign.net For this assignment, you question parts. The num remaining for each quest you submit or change the Assignment Scoring Your best submission for used for your score. 14. [-/5 Points] DETAILS LARCALC11 2.1.513.XP. MY NOTES Describe the x-values at which the function is differentiable. (Enter your answer using interval notation.) y = \\x