I start with $9-2x$ widgets. Each day, I produce $2x+1$ widgets, and destroy $3-x$ widgets. After three days, how many widgets am I left with, in terms of $x$?

3+7x

Step-by-step explanation:

-We add the number of widgets produced in 3 days to the number originally owned:

#We the determine the widgets destroyed in 3 days:

#Subtract the widgets destroyed from the total owned to get what is left after 3 days:

Hence, the number of widgets remaining after 3 days is 3+7x

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