For this answer is will be b
The maximum number of minutes she could use her phone is 150
Volume (V) of a cylinder is the area of circular base (pi×r^2) times it's length/height (h):

h = 20.5 ft
diameter (d) = 1 1/5 × h, 1 1/5 = 6/5 = 1.20
d = 1.20 × 20.5 = 24.6 ft
radius (r) = 1/2 d = 24.6/2 = 12.3 ft
Answer:
Point C would now be (6,0)
Point B would now be (0,-7)
Point A would now be (2,-6)
F(x+2) = 3(x+2) + 5
= 3x + 6 + 5
= 3x + 11