Answer:
A it is linear because it has a constant rate of change
R = √10
h = √40 = 2√10
lateral area = 2 pi r h = 2 pi √10 2√10 = 40 pi = 125.6 units^2
Yes as that is the function notation in play. a function of x.
(2,4), (4,8), (3,6), (5,10) because they’re all ratios of 1:2
Now this may or may not be work I’m 99.9 percent sure it’s right but if not sorry