Answer:
A
Step-by-step explanation:
Domain is the list of x values that are in the function.
IN this case it is all integers 
8 because a person can buy up to 8 tickets
Answer: E=1
Step-by-step explanation:
because 2 times 1 is 2 or any number multiplied by 1 is itself
Answer:
then 2x = 0 and x - 3 = 0
Step-by-step explanation:
Y = m x + b , where m is the slope. The slope is the rise over the run or the change in x ( rooms cleaned ) over the change in y ( cost ).
125 = m * 1 + b
175 = m * 2 + b
-----------------------
b = 125 - m
175 = 2 m + 125 - m
m = 175 - 125
m = 50 ( the rate of change ), b = 75
The formula is: y = 50 x + 75
It means that the starting cost will be $75 and that for every room cleaned, the cost will rise for $50.
