Answer:
Step-by-step explanation:
For example, if your number is 1 then you add 4, double that, subtract 7, and you will get 3. ... (x+4) \times2 - 7 is equal to 2x + 1, so we subtract 1 from the result and divide by 2 to get the ... It is adding 0.5 so, and we can see that when 0.5\times n is done
