Rule 1: Multiply x by 5 to get y.
Rule 2: Add 12 to x to get y.

B) (3,15)

Step-by-step explanation:

Let's try rule 1.

x × 5 = y

5x = y -> 1

Now let's try rule 2.

12 + x = y

12+ x = y -> 2

Equating eqn. 1 and 2,

5x = 12 + x

4x = 12

x = 3

From eqn. 1,

5x = y

5 × 3 = y

Hence, y =15

So the final answer is B) (3,15).

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

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step-by-step explanation:

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