Question 206045
# 1


I'll follow your work and make notes:



Pick a number: let X be number .... correct. note: usually, variables are in lower case, but that's ok.


Multiply the number by: 5*X .... good.


Add 10 to the product: 5*X + 10 ... good


Divide the sum by 5: I get 1*X +10 .... incorrect. you forgot to divide 10 by 5 to get 2. So you should have X + 2


Finally, you forgot to subtract 1 from X+2 to get (X+2)-1=X+1



So the final result is the original number X plus 1. In other words, the result is simply the next integer.  



Ex: Pick a random number (say 12)

Multiply by 5: 12*5=60
Add 10: 60+10=70
Divide by 5: 70/5=14
Subtract 1: 14-1=13


So picking the original number 12 results in the answer of 13 (which is 1 more). Go ahead and pick any other number and test it yourself.



# 2


Correct. Good Job



# 3


Correct again. Good Job


# 4


I have no idea either since I'm missing either the problem itself or the picture that you're looking at. So you need to include more info.