F=-100
solve for f
f=
wold the answer be 1

1 is incorrect. to solve for f, you have to get it alone, and right now you have a negative sign in your way.

you can eliminate the negative by dividing both sides by -1:

-f = -100

divide by -1 to cancel out the - in front of f

f = 100

He will need 2,898 pieces of paper

$22. if larry's profit were to minimize by one for every hour his store were to be closed, we would subtract 30 by 8.