Given the linear function f of x is equal to 3 x plus 50 , which of the scenarios does it best represent?
Answer
A
A factory produces 50 units of a product daily and adds 3 more when machines are working OK.
B
A store charges 3 dollars for each apple and has a 50 dollars for each orange.
C
A gym charges 50 dollars per month and an additional 3 dollars for each class attended.
D
A bakery sells cupcakes for 50 dollars each and offers a 3 dollars discount for bulk orders.
Explanation
The function f(x) = 3x + 50 has a starting amount of 50 and increases by 3 for every unit of x. A gym’s $50 monthly fee is the starting cost, and the extra $3 per class is added for each class attended. So it best represents the gym scenario.
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