You can sell 110 pet chias per week if they are marked at $1 each, but only 90 each week if they are marked at $2/chia. Your chia supplier is prepared to sell you 70 chias each week if they are marked at $1 per chia, and 150 each week if they are marked at $2 per chia. (a) Write down the associated linear demand and supply functions. demand functionq(p)=       supply functionq(p)=       (b) At what price (in dollars) should the chias be marked so that there is neither a surplus nor a shortage of chias? $