For each scenario below, indicate what is happening with which curve, and what will be the result on equilibrium price and equilibrium quantity.

a) computers are considered a normal good, and consumer income is decreasing

b)there has been technological progress in the construction of our computers, at the same time that consumer preferences for our computers is rising

c)there is an increase in the cost of acquiring microchips, which is a key input in the production of our computers

d)there is an increase in the number of buyers of our computers, at the same time that labor costs for hiring workers in our firm is rising