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A tour bus holds 40 people. It charges $7 per ticket. The function representing the total sales is f(x) = 7x, where x represents the number of tickets sold.
What is the domain?

A) x = all real numbers
B) x = all non-negative integers 40 or below
C) x < =40
D) x = all non- negative integers 280 of below


Sagot :