)if cigarettes are priced at $7 a pack, how many packs will smokers buy? (b) if secondhand smoke creates $2 of harm per pack, what is the optimal rate of smoking? (c) how large a tax is needed to achieve this outcome?

They won't because you shouldn't smoke . I should know my dad's a smoker and he smokes 2 packs a day . when you do you inhale tar , carbondioxide , bezel . tar - the roads carbondioxide - chemicals bezel - very toxic stuff possibly found in cleaners it makes a fat substains that makes heart blockage, lung cancer ,brain cancer ,heart disease, gum disease ,oral cancer and half of the smokers in this world die from smokeing now my point is of telling you this is that you share this with people so that they DONT smoke . thank you,                                         Autumn

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation: