Answer:
Step-by-step explanation:
From the question we are told that
February Heat 
February Gas 
April Heat 
April Gas 
Generally equation for heating degree-days X is mathematically given by
Generally the equation for gas bill Y is mathematically represented by
The equation representing the relationship between the gas bill (Y) and heating degree-days (X) is
The answer is A. 0
i hope this helps!
Answer:
CF
Step-by-step explanation:
we know that
An <u><em>angle bisector</em></u> is a line that divide an angle into two equal angles.
In this problem
---> given problem
---> by addition angle postulate
so
CF is an angle bisector of angle 
Answer:
Relation 1,2,and 4 are functions, but relation 3 not is a function.
Step-by-step explanation:
function 1 input, no function with the same input like m in relation 3.
