Answer:
See the explanation below
Step-by-step explanation:
The independent variable is the time of the visit
The dependent variable is the total service charge, this depends on the amount of time spent working in the house
Length: 4x
Width: ??
Length x Width: 4x^2 + 12x
Can be rewritten as: 4x(x+3)
Therefore: ?? = x + 3
Answer: m= -6
Step-by-step explanation: Solve for m by simplifying both side of the equation, then isolating the varible.