Which of the following represents a valid probability distribution?
2 answers:
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Answer:
--- Running cost
--- Monthly income
71 cars
R1775
Step-by-step explanation:
Given
Expenses
per car
Income
per car
Solving (a): Expression for the running cost
This is calculated as:
Where
y = Total running cost
x = number of cars
So:
Solving (b): Expression for monthly income
This is calculated as:
Where
y = Total income
x = number of cars
So:
Solving (c): Break even
To do this, we equate the expressions in (a) and (b)
Collect Like Terms
Solve for x
Solving (d): How much to break even
Substitute 71 for x in any of (a) or (b)
<em>Solving (e): There is no question to answer on the "graph"</em>
