Answer:

Step-by-step explanation:
In this exercise, we want to model an equation to represent the cost that Gabriel will when registering with a gym.
from the given information, we can model the cost after the equation of a straight line
y= mx+c
so "C" is the cost, while $40 is a fee dependent on "t" the number of months subscribed
and $100 is the joining fee, which is a constant term

B false ( I think that is the answer )
(a² + b² - 2ab) + 2ac - 2bc = (a - b)² + 2c(a-b) = (a-b)(a-b +2c)