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44 votes
44 votes
A set of instructions says to subtract 5 from a number n and then double that result, calling the final result p. Which

Function rule represents this set of instructions?
A p = 2(n-5)
B. p = 2n-5
C. n = 2(p-5)
D. n = 2p - 5

User Akshay I
by
2.7k points

2 Answers

21 votes
21 votes

Final answer:

The correct function rule that represents subtracting 5 from a number n and then doubling the result is p = 2(n - 5), which corresponds to option A.

Step-by-step explanation:

To determine the correct function rule based on the set of instructions provided, we must translate the words into mathematical operations. The instructions ask us to subtract 5 from a number n and then double that result. Therefore, the first step is to perform the subtraction, which is represented mathematically as (n - 5). Following that, we are instructed to double the result, which can be represented mathematically as multiplying by 2, or 2 × (n - 5). Combining these operations, we obtain the function rule p = 2(n - 5), which matches exactly with option A.

As for the other options, they do not accurately represent the set of instructions. Option B is missing parentheses and therefore implies that we double n and then subtract 5, which is not correct based on the instructions. Option C and Option D incorrectly present n as the result, rather than p, and they do not represent the correct operations as described by the instructions.

User Darknoe
by
2.9k points
11 votes
11 votes

Answer:

it either A or B im not sure which one

Step-by-step explanation:

User Amnesyc
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2.7k points