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Can someone help me please fast!?!?!

The graph below represents the money collected at the skating rink on Friday. Find the domain when the maximum number of people allowed in the skating rink is 75 people.

A. 0 ≤ y ≤ 75

B. 0 ≤ x ≤ 75

C. 20 ≤ y ≤ 320

D. 20 ≤ x ≤ 320

Can someone help me please fast!?!?! The graph below represents the money collected-example-1
User Piotr Z
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1 Answer

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Answer: choice B.)

Reasoning:

Remember, the domain of a function is the set of all x-values that produces a corresponding range value (y-value). In other words, the domain is spread of the x-coordinate in the coordinate pairs of a function. So, in this case, the x-axis relates to the number of people who purchased a pass. Thus, the domain must relate to the number of people who purchased a pass. We are given a maximum of 75 people, and because we have multiple domain values (x-values) that can satisfy this range, an inequality is used. This is shown as answer choice B.) because 0 is greater than or equal to zero and less than 75, and 75 is less than or equal to 75.
User Eton
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