Answer:

Step-by-step explanation:
The point-slope form of an equation of a line:

m - slope


Answer:
4096
Step-by-step explanation:
Answer:
$400
OR 
Step-by-step explanation:
$400 stays the same, 72 cents is 72/100. Simplify and voila
No "x" can not be repeated, a function has one x-element and one y-element