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28 and 78

98 and 27

26 and 28

1: 25% increase. 2: 25% decrease. 3: 200% increase.

Step-by-step explanation:

For number 1, we see that the difference between 12 and 15 is 3. 3 happens to be 25% of 12, so that is our answer. For number 2, the difference is 6, which is also 25%, except this one is decreasing, so a 25% decrease. For number 3, the difference between 9 and 27 is 18, and 18 is 200% of 9.

6

Step-by-step explanation:

1 apple = 2 dollars

Multiplying each side by the same amount will give you an inequality equivalent to that. It can also be done with division, addition, and subtraction

1*6 = 2*6

6 apples = 12 dollars