Answer:
Y=2.50x+3
Step-by-step explanation:
Because the $3 fee is not changing but the 2.50 is changing every pound that they get.
Answer:
A) 
Step-by-step explanation:
The equation of a circle is
where
is the center and
is the radius. If
and
, then:

Therefore, the equation of the circle is 
The equation of the line is x=4
Answer:
um
Step-by-step explanation:
Answer:
0
Step-by-step explanation:
Replace x with 2.
-(2)+2=0