Answer:

General Formulas and Concepts:
<u>Algebra I</u>
- Functions
- Function Notation
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>

<u>Step 2: Find</u>
- Substitute in <em>x</em> [Function f(x)]:

- Simplify:

Answer:
b d is the answer and see in book
Answer: Choice A
s = 10k + 6(5)
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Reason:
k = number of adults
10k = cost for all the adults (at $10 per ticket)
5 = number of children
6(5) = cost for all the children ($6 per ticket)
10k + 6(5) = total cost for all adults and children
s = total cost in dollars
s = 10k+6(5)
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I think the equation of the line can be identified as a proportion because if it was non-proportion, there would be no equation. Hope it helps!