Answer:
(
Step-by-step explanation:
Surface area of cone is given as:
Surface Area (S.A) = πr(r + l)
Where,


Take π as 3.14
Plug the given values into the formula to find the surface area.


(rounded to the nearest tenth)
-5.9, -4, -1/4, 1.75, 6.2, 18 1/2, 21
Obviously does not pass vertical line test.
since doesn't pass is not a function
the horizontal line test has nothing to do with it being a function
Answer:
19. 5x²y⁷
20. a³b²c⁷
21. 4a³b⁴
Step-by-step explanation:
hope i helped! good luck in class!!