There was 27 people called on Sunday because its
3 x 3 = 9 for Saturday
then 9 x 3 = 27 for Sunday
Answer:
The equation that models the relationships between
, the number of hours Mark reads, and ,
the number of pages of the book he reads is:

Step-by-step explanation:
Given:
Mark reads 42 pages every
hour.
The number of hours is given by = 
The number of pages is given by =
The equation can be modeled as:

where
represents rate of change and
represents the y-intercept or the initial value.
Rate of change =
The initial value
as Mark starts reading from 0.
So, the equation is:

There is no horizontal asymptote.