for every completed length of audiobook, Zhen spends 6.5 hours working.
C.Zhen spends 6 1/2 hours working per audiobook
Answer:
x = 1
Step-by-step explanation:
For a quadratic function
, the axis of symmetry is
.
This comes from using part of the Quadratic Formula for finding zeros of the function:

See the -b/(2a) in the first term? That's the x-coordinate of the vertex (turning point) of the parabolic graph of the function. The axis of symmetry goes through the vertex.
Answer: c
Step-by-step explanation:
33.24 / 12 = 2.77
44.80 / 16 = 2.80
41.10 / 15 = 2.74
(/ means divide)