Hope that helps!
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1 answer:
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Answer:
(a)
(b)
Step-by-step explanation:
Quotient of factorials:
we are given
we can multiply top and bottom term by 21!
we can write as
As a permutation:
we know permutation formula
now, we can compare and find 'n' and 'r'
we can plug back n=25
so, we can write
Option A: is the equation.
Explanation:
Let x represents the number of hours per month the store is open.
It is given that the the monthly rent(expense) = $1200
Also, the employee salary for each hour(expense) = $120x
Thus, the total expense C(x) is
It is also given that the income per hour(revenue) is $200x
Thus, the revenue function R(x) is
The break - even point is given by
Total expense = Revenue
Thus, is the equation.
Hence, Option A is the correct answer.