At a zoo, youth tickets cost $5 and adult tickets cost $9. a group that purchased x youth tickets and y adult tickets spent $90 on tickets. what is the domain of the relationship? a. x ≤ 5 b. 0 ≤ x ≤ 5 c. 0 ≤ x ≤ 18 d. x ≤ 18

Step-by-step explanation:

Let x represent the number of youth tickets purchased at the zoo.

Let y represent the number of adult tickets purchased at the zoo.

At the zoo, youth tickets cost $5 and adult tickets cost $9. A group spent a total of $90 on tickets. This means that

5x + 9y = 90

The domain of the relationship is the possible set of values of x and y that satisfies the equation. The domain of this relationship is

0 ≤ x ≤ 18

At x = 0, it means only adult tickets were purchased.

At x = 18, it means only youth tickets were purchased.

1

step-by-step explanation:

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c. (3,2,6) is the answer.